21015274265150 has 96 divisors (see below), whose sum is σ = 42858844858368. Its totient is φ = 7603080508800.

The previous prime is 21015274265147. The next prime is 21015274265171. The reversal of 21015274265150 is 5156247251012.

It is a junction number, because it is equal to n+sod(n) for n = 21015274265098 and 21015274265107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 207595847 + ... + 207697053.

It is an arithmetic number, because the mean of its divisors is an integer number (446446300608).

Almost surely, 2^{21015274265150} is an apocalyptic number.

21015274265150 is an abundant number, since it is smaller than the sum of its proper divisors (21843570593218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21015274265150 is a wasteful number, since it uses less digits than its factorization.

21015274265150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103146 (or 103141 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 41.

The spelling of 21015274265150 in words is "twenty-one trillion, fifteen billion, two hundred seventy-four million, two hundred sixty-five thousand, one hundred fifty".