2101121021120 has 56 divisors (see below), whose sum is σ = 5458139389008. Its totient is φ = 764044006400.

The previous prime is 2101121021101. The next prime is 2101121021137. The reversal of 2101121021120 is 211201211012.

It is a junction number, because it is equal to n+sod(n) for n = 2101121021095 and 2101121021104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298451171 + ... + 298458210.

Almost surely, 2^{2101121021120} is an apocalyptic number.

2101121021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101121021120 is an abundant number, since it is smaller than the sum of its proper divisors (3357018367888).

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

2101121021120 is a wasteful number, since it uses less digits than its factorization.

2101121021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596909409 (or 596909399 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2101121021120 its reverse (211201211012), we get a palindrome (2312322232132).

The spelling of 2101121021120 in words is "two trillion, one hundred one billion, one hundred twenty-one million, twenty-one thousand, one hundred twenty".