21201033490524 has 120 divisors (see below), whose sum is σ = 55470821369040. Its totient is φ = 7061004347904.

The previous prime is 21201033490457. The next prime is 21201033490543. The reversal of 21201033490524 is 42509433010212.

21201033490524 is a `hidden beast` number, since 2 + 1 + 2 + 0 + 10 + 3 + 34 + 90 + 524 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3146951284 + ... + 3146958020.

It is an arithmetic number, because the mean of its divisors is an integer number (462256844742).

Almost surely, 2^{21201033490524} is an apocalyptic number.

It is an amenable number.

21201033490524 is an abundant number, since it is smaller than the sum of its proper divisors (34269787878516).

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

21201033490524 is a wasteful number, since it uses less digits than its factorization.

21201033490524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13569 (or 13558 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 21201033490524 in words is "twenty-one trillion, two hundred one billion, thirty-three million, four hundred ninety thousand, five hundred twenty-four".