21122001021202 has 8 divisors (see below), whose sum is σ = 33546707504316. Its totient is φ = 9939765186432.

The previous prime is 21122001021193. The next prime is 21122001021211. The reversal of 21122001021202 is 20212010022112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21122001021193) and next prime (21122001021211).

It can be written as a sum of positive squares in 2 ways, for example, as 21121368448401 + 632572801 = 4595799^2 + 25151^2 .

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

It is a super-2 number, since 2×21122001021202² (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, 310617662043 + ... + 310617662110.

Almost surely, 2^{21122001021202} is an apocalyptic number.

21122001021202 is a deficient number, since it is larger than the sum of its proper divisors (12424706483114).

21122001021202 is a wasteful number, since it uses less digits than its factorization.

21122001021202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621235324172.

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

Adding to 21122001021202 its reverse (20212010022112), we get a palindrome (41334011043314).

The spelling of 21122001021202 in words is "twenty-one trillion, one hundred twenty-two billion, one million, twenty-one thousand, two hundred two".