1221022112310 has 384 divisors, whose sum is σ = 4377691229184. Its totient is φ = 227871636480.

The previous prime is 1221022112287. The next prime is 1221022112333. The reversal of 1221022112310 is 132112201221.

1221022112310 is a `hidden beast` number, since 1 + 2 + 210 + 221 + 1 + 231 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1221022112287) and next prime (1221022112333).

It is a super-2 number, since 2×1221022112310² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3150177 + ... + 3516483.

It is an arithmetic number, because the mean of its divisors is an integer number (11400237576).

Almost surely, 2^{1221022112310} is an apocalyptic number.

1221022112310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1221022112310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2188845614592).

1221022112310 is an abundant number, since it is smaller than the sum of its proper divisors (3156669116874).

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

1221022112310 is a wasteful number, since it uses less digits than its factorization.

1221022112310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366388 (or 366385 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1221022112310 its reverse (132112201221), we get a palindrome (1353134313531).

The spelling of 1221022112310 in words is "one trillion, two hundred twenty-one billion, twenty-two million, one hundred twelve thousand, three hundred ten".