2121001000202 has 48 divisors (see below), whose sum is σ = 3707741255400. Its totient is φ = 907328967552.

The previous prime is 2121001000177. The next prime is 2121001000219. The reversal of 2121001000202 is 2020001001212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2084676833281 + 36324166921 = 1443841^2 + 190589^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152221628 + ... + 152235560.

Almost surely, 2^{2121001000202} is an apocalyptic number.

2121001000202 is a deficient number, since it is larger than the sum of its proper divisors (1586740255198).

2121001000202 is a wasteful number, since it uses less digits than its factorization.

2121001000202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16695 (or 16688 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2121001000202 its reverse (2020001001212), we get a palindrome (4141002001414).

The spelling of 2121001000202 in words is "two trillion, one hundred twenty-one billion, one million, two hundred two", and thus it is an aban number.