2121102221202 has 32 divisors (see below), whose sum is σ = 4718232129600. Its totient is φ = 706333328064.

The previous prime is 2121102221177. The next prime is 2121102221233. The reversal of 2121102221202 is 2021222011212.

It is a happy number.

2121102221202 is a `hidden beast` number, since 212 + 110 + 222 + 120 + 2 = 666.

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 15 ways as a sum of consecutive naturals, for example, 19410168 + ... + 19519139.

It is an arithmetic number, because the mean of its divisors is an integer number (147444754050).

Almost surely, 2^{2121102221202} is an apocalyptic number.

2121102221202 is an abundant number, since it is smaller than the sum of its proper divisors (2597129908398).

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

2121102221202 is a wasteful number, since it uses less digits than its factorization.

2121102221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38930327 (or 38930321 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2121102221202 its reverse (2021222011212), we get a palindrome (4142324232414).

The spelling of 2121102221202 in words is "two trillion, one hundred twenty-one billion, one hundred two million, two hundred twenty-one thousand, two hundred two".