21122000221204 has 12 divisors (see below), whose sum is σ = 36964856588800. Its totient is φ = 10560612624408.

The previous prime is 21122000221193. The next prime is 21122000221219. The reversal of 21122000221204 is 40212200022112.

It is a super-3 number, since 3×21122000221204³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

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, 96748884 + ... + 96966955.

Almost surely, 2^{21122000221204} is an apocalyptic number.

It is an amenable number.

21122000221204 is a deficient number, since it is larger than the sum of its proper divisors (15842856367596).

21122000221204 is a wasteful number, since it uses less digits than its factorization.

21122000221204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193743102 (or 193743100 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21122000221204 its reverse (40212200022112), we get a palindrome (61334200243316).

The spelling of 21122000221204 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred twenty-one thousand, two hundred four".