21123516602150 has 48 divisors (see below), whose sum is σ = 40333598823744. Its totient is φ = 8226784020480.

The previous prime is 21123516602131. The next prime is 21123516602161. The reversal of 21123516602150 is 5120661532112.

It is a self number, because there is not a number n which added to its sum of digits gives 21123516602150.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22833317 + ... + 23740416.

It is an arithmetic number, because the mean of its divisors is an integer number (840283308828).

Almost surely, 2^{21123516602150} is an apocalyptic number.

21123516602150 is a deficient number, since it is larger than the sum of its proper divisors (19210082221594).

21123516602150 is a wasteful number, since it uses less digits than its factorization.

21123516602150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46573985 (or 46573980 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 21123516602150 in words is "twenty-one trillion, one hundred twenty-three billion, five hundred sixteen million, six hundred two thousand, one hundred fifty".