21260553654422 has 16 divisors (see below), whose sum is σ = 32188673674080. Its totient is φ = 10531027683072.

The previous prime is 21260553654419. The next prime is 21260553654503. The reversal of 21260553654422 is 22445635506212.

It is a super-2 number, since 2×21260553654422² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6644258 + ... + 9309525.

It is an arithmetic number, because the mean of its divisors is an integer number (2011792104630).

Almost surely, 2^{21260553654422} is an apocalyptic number.

21260553654422 is a deficient number, since it is larger than the sum of its proper divisors (10928120019658).

21260553654422 is a wasteful number, since it uses less digits than its factorization.

21260553654422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15960007.

The product of its (nonzero) digits is 3456000, while the sum is 47.

The spelling of 21260553654422 in words is "twenty-one trillion, two hundred sixty billion, five hundred fifty-three million, six hundred fifty-four thousand, four hundred twenty-two".