21212960523 has 8 divisors (see below), whose sum is σ = 28402291200. Its totient is φ = 14082801768.

The previous prime is 21212960507. The next prime is 21212960539. The reversal of 21212960523 is 32506921212.

It is an interprime number because it is at equal distance from previous prime (21212960507) and next prime (21212960539).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21212960523 - 2⁴ = 21212960507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21212960563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14792143 + ... + 14793576.

It is an arithmetic number, because the mean of its divisors is an integer number (3550286400).

Almost surely, 2^21212960523 is an apocalyptic number.

21212960523 is a deficient number, since it is larger than the sum of its proper divisors (7189330677).

21212960523 is a wasteful number, since it uses less digits than its factorization.

21212960523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29585961.

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 21212960523 in words is "twenty-one billion, two hundred twelve million, nine hundred sixty thousand, five hundred twenty-three".