21366430105102 has 16 divisors (see below), whose sum is σ = 32064029737200. Its totient is φ = 10678420969920.

The previous prime is 21366430105099. The next prime is 21366430105169. The reversal of 21366430105102 is 20150103466312.

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, 56648077 + ... + 57024007.

It is an arithmetic number, because the mean of its divisors is an integer number (2004001858575).

Almost surely, 2^{21366430105102} is an apocalyptic number.

21366430105102 is a deficient number, since it is larger than the sum of its proper divisors (10697599632098).

21366430105102 is a wasteful number, since it uses less digits than its factorization.

21366430105102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388611.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 21366430105102 in words is "twenty-one trillion, three hundred sixty-six billion, four hundred thirty million, one hundred five thousand, one hundred two".