2100121021002 has 32 divisors (see below), whose sum is σ = 4211515788480. Its totient is φ = 698163226880.

The previous prime is 2100121020983. The next prime is 2100121021021. The reversal of 2100121021002 is 2001201210012.

It is an interprime number because it is at equal distance from previous prime (2100121020983) and next prime (2100121021021).

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, 4345624 + ... + 4804652.

It is an arithmetic number, because the mean of its divisors is an integer number (131609868390).

Almost surely, 2^{2100121021002} is an apocalyptic number.

2100121021002 is an abundant number, since it is smaller than the sum of its proper divisors (2111394767478).

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

2100121021002 is a wasteful number, since it uses less digits than its factorization.

2100121021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461078.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2100121021002 its reverse (2001201210012), we get a palindrome (4101322231014).

The spelling of 2100121021002 in words is "two trillion, one hundred billion, one hundred twenty-one million, twenty-one thousand, two".