1021110002120 has 64 divisors (see below), whose sum is σ = 2474341294320. Its totient is φ = 377007980544.

The previous prime is 1021110002111. The next prime is 1021110002203. The reversal of 1021110002120 is 212000111201.

It can be written as a sum of positive squares in 8 ways, for example, as 474938748964 + 546171253156 = 689158^2 + 739034^2 .

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, 19493084 + ... + 19545396.

Almost surely, 2^{1021110002120} is an apocalyptic number.

1021110002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021110002120 is an abundant number, since it is smaller than the sum of its proper divisors (1453231292200).

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

1021110002120 is a wasteful number, since it uses less digits than its factorization.

1021110002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89874 (or 89870 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1021110002120 its reverse (212000111201), we get a palindrome (1233110113321).

The spelling of 1021110002120 in words is "one trillion, twenty-one billion, one hundred ten million, two thousand, one hundred twenty".