1030221011220 has 192 divisors, whose sum is σ = 2980969205760. Its totient is φ = 265748769792.

The previous prime is 1030221011213. The next prime is 1030221011227. The reversal of 1030221011220 is 221101220301.

It is an interprime number because it is at equal distance from previous prime (1030221011213) and next prime (1030221011227).

It is a super-2 number, since 2×1030221011220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1030221011220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030221011227) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45640377 + ... + 45662943.

It is an arithmetic number, because the mean of its divisors is an integer number (15525881280).

Almost surely, 2^{1030221011220} is an apocalyptic number.

1030221011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1030221011220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1490484602880).

1030221011220 is an abundant number, since it is smaller than the sum of its proper divisors (1950748194540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1030221011220 is a wasteful number, since it uses less digits than its factorization.

1030221011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22854 (or 22852 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1030221011220 its reverse (221101220301), we get a palindrome (1251322231521).

The spelling of 1030221011220 in words is "one trillion, thirty billion, two hundred twenty-one million, eleven thousand, two hundred twenty".