21122001012202 has 8 divisors (see below), whose sum is σ = 31684315856256. Its totient is φ = 10560562393452.

The previous prime is 21122001012173. The next prime is 21122001012221. The reversal of 21122001012202 is 20221010022112.

It is a happy number.

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

It is a super-2 number, since 2×21122001012202² (a number of 27 digits) contains 22 as substring.

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, 218996058 + ... + 219092485.

It is an arithmetic number, because the mean of its divisors is an integer number (3960539482032).

Almost surely, 2^{21122001012202} is an apocalyptic number.

21122001012202 is a deficient number, since it is larger than the sum of its proper divisors (10562314844054).

21122001012202 is a wasteful number, since it uses less digits than its factorization.

21122001012202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438112652.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21122001012202 its reverse (20221010022112), we get a palindrome (41343011034314).

The spelling of 21122001012202 in words is "twenty-one trillion, one hundred twenty-two billion, one million, twelve thousand, two hundred two".