2101121000002 has 8 divisors (see below), whose sum is σ = 3151741642812. Its totient is φ = 1050540452400.

The previous prime is 2101120999951. The next prime is 2101121000021. The reversal of 2101121000002 is 2000001211012.

It can be written as a sum of positive squares in 2 ways, for example, as 1197691660881 + 903429339121 = 1094391^2 + 950489^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9892449 + ... + 10102612.

Almost surely, 2^{2101121000002} is an apocalyptic number.

2101121000002 is a deficient number, since it is larger than the sum of its proper divisors (1050620642810).

2101121000002 is a wasteful number, since it uses less digits than its factorization.

2101121000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20047604.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2101121000002 its reverse (2000001211012), we get a palindrome (4101122211014).

The spelling of 2101121000002 in words is "two trillion, one hundred one billion, one hundred twenty-one million, two", and thus it is an aban number.