1011313232220 has 192 divisors, whose sum is σ = 3137385799296. Its totient is φ = 242299699200.

The previous prime is 1011313232207. The next prime is 1011313232231. The reversal of 1011313232220 is 222323131101.

It is a super-2 number, since 2×1011313232220² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1747420 + ... + 2253020.

It is an arithmetic number, because the mean of its divisors is an integer number (16340551038).

Almost surely, 2^{1011313232220} is an apocalyptic number.

1011313232220 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 1011313232220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1568692899648).

1011313232220 is an abundant number, since it is smaller than the sum of its proper divisors (2126072567076).

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

1011313232220 is a wasteful number, since it uses less digits than its factorization.

1011313232220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505720 (or 505718 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1011313232220 its reverse (222323131101), we get a palindrome (1233636363321).

The spelling of 1011313232220 in words is "one trillion, eleven billion, three hundred thirteen million, two hundred thirty-two thousand, two hundred twenty".