2121202311210 has 24 divisors (see below), whose sum is σ = 5515126009380. Its totient is φ = 565653949632.

The previous prime is 2121202311203. The next prime is 2121202311251. The reversal of 2121202311210 is 121132021212.

2121202311210 is a `hidden beast` number, since 2 + 121 + 20 + 2 + 311 + 210 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2111432767929 + 9769543281 = 1453077^2 + 98841^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11784457195 + ... + 11784457374.

Almost surely, 2^{2121202311210} is an apocalyptic number.

2121202311210 is an abundant number, since it is smaller than the sum of its proper divisors (3393923698170).

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

2121202311210 is a wasteful number, since it uses less digits than its factorization.

2121202311210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23568914582 (or 23568914579 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2121202311210 its reverse (121132021212), we get a palindrome (2242334332422).

The spelling of 2121202311210 in words is "two trillion, one hundred twenty-one billion, two hundred two million, three hundred eleven thousand, two hundred ten".