21442055121231 has 8 divisors (see below), whose sum is σ = 28764801962880. Its totient is φ = 14207005846872.

The previous prime is 21442055121181. The next prime is 21442055121269. The reversal of 21442055121231 is 13212155024412.

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

It is not a de Polignac number, because 21442055121231 - 2⁹ = 21442055120719 is a prime.

It is a super-2 number, since 2×21442055121231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21442055121192 and 21442055121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21442055161231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21924391251 + ... + 21924392228.

It is an arithmetic number, because the mean of its divisors is an integer number (3595600245360).

Almost surely, 2^{21442055121231} is an apocalyptic number.

21442055121231 is a deficient number, since it is larger than the sum of its proper divisors (7322746841649).

21442055121231 is a wasteful number, since it uses less digits than its factorization.

21442055121231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43848783645.

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 21442055121231 in words is "twenty-one trillion, four hundred forty-two billion, fifty-five million, one hundred twenty-one thousand, two hundred thirty-one".