21524250212152 has 32 divisors (see below), whose sum is σ = 40766315454720. Its totient is φ = 10653386679520.

The previous prime is 21524250212141. The next prime is 21524250212161. The reversal of 21524250212152 is 25121205242512.

It is a super-2 number, since 2×21524250212152² (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, 8500624 + ... + 10738207.

It is an arithmetic number, because the mean of its divisors is an integer number (1273947357960).

Almost surely, 2^{21524250212152} is an apocalyptic number.

It is an amenable number.

21524250212152 is a deficient number, since it is larger than the sum of its proper divisors (19242065242568).

21524250212152 is a wasteful number, since it uses less digits than its factorization.

21524250212152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19240251 (or 19240247 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 34.

Adding to 21524250212152 its reverse (25121205242512), we get a palindrome (46645455454664).

The spelling of 21524250212152 in words is "twenty-one trillion, five hundred twenty-four billion, two hundred fifty million, two hundred twelve thousand, one hundred fifty-two".