1012021021120 has 112 divisors (see below), whose sum is σ = 2467493879328. Its totient is φ = 395236638720.

The previous prime is 1012021021043. The next prime is 1012021021153. The reversal of 1012021021120 is 211201202101.

It is a self number, because there is not a number n which added to its sum of digits gives 1012021021120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2213860 + ... + 2631580.

Almost surely, 2^{1012021021120} is an apocalyptic number.

1012021021120 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 1012021021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1233746939664).

1012021021120 is an abundant number, since it is smaller than the sum of its proper divisors (1455472858208).

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

1012021021120 is a wasteful number, since it uses less digits than its factorization.

1012021021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417918 (or 417908 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1012021021120 its reverse (211201202101), we get a palindrome (1223222223221).

The spelling of 1012021021120 in words is "one trillion, twelve billion, twenty-one million, twenty-one thousand, one hundred twenty".