21055124425231 has 8 divisors (see below), whose sum is σ = 22727116013840. Its totient is φ = 19390613784192.

The previous prime is 21055124425229. The next prime is 21055124425319. The reversal of 21055124425231 is 13252442155012.

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

It is a cyclic number.

It is not a de Polignac number, because 21055124425231 - 2¹ = 21055124425229 is a prime.

It is a super-2 number, since 2×21055124425231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21055124425201) 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, 1870231041 + ... + 1870242298.

It is an arithmetic number, because the mean of its divisors is an integer number (2840889501730).

Almost surely, 2^{21055124425231} is an apocalyptic number.

21055124425231 is a deficient number, since it is larger than the sum of its proper divisors (1671991588609).

21055124425231 is a wasteful number, since it uses less digits than its factorization.

21055124425231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3740473785.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 21055124425231 in words is "twenty-one trillion, fifty-five billion, one hundred twenty-four million, four hundred twenty-five thousand, two hundred thirty-one".