21233513054 has 16 divisors (see below), whose sum is σ = 35406752640. Its totient is φ = 9483950880.

The previous prime is 21233513027. The next prime is 21233513057. The reversal of 21233513054 is 45031533212.

It is a happy number.

It is a super-2 number, since 2×21233513054² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233513057) 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, 13171349 + ... + 13172960.

It is an arithmetic number, because the mean of its divisors is an integer number (2212922040).

Almost surely, 2^21233513054 is an apocalyptic number.

21233513054 is a deficient number, since it is larger than the sum of its proper divisors (14173239586).

21233513054 is a wasteful number, since it uses less digits than its factorization.

21233513054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26344355.

The product of its (nonzero) digits is 10800, while the sum is 29.

The spelling of 21233513054 in words is "twenty-one billion, two hundred thirty-three million, five hundred thirteen thousand, fifty-four".