2121001020210 has 32 divisors (see below), whose sum is σ = 5090668448832. Its totient is φ = 565570716480.

The previous prime is 2121001020209. The next prime is 2121001020221. The reversal of 2121001020210 is 120201001212.

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, 1260496 + ... + 2414715.

It is an arithmetic number, because the mean of its divisors is an integer number (159083389026).

Almost surely, 2^{2121001020210} is an apocalyptic number.

2121001020210 is an abundant number, since it is smaller than the sum of its proper divisors (2969667428622).

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

2121001020210 is a wasteful number, since it uses less digits than its factorization.

2121001020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3694458.

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

Adding to 2121001020210 its reverse (120201001212), we get a palindrome (2241202021422).

The spelling of 2121001020210 in words is "two trillion, one hundred twenty-one billion, one million, twenty thousand, two hundred ten".