21100433224015 has 32 divisors (see below), whose sum is σ = 26023331303424. Its totient is φ = 16416433587840.

The previous prime is 21100433223973. The next prime is 21100433224033. The reversal of 21100433224015 is 51042233400112.

It is not a de Polignac number, because 21100433224015 - 2⁹ = 21100433223503 is a prime.

It is a super-2 number, since 2×21100433224015² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112185982 + ... + 112373908.

It is an arithmetic number, because the mean of its divisors is an integer number (813229103232).

Almost surely, 2^{21100433224015} is an apocalyptic number.

21100433224015 is a deficient number, since it is larger than the sum of its proper divisors (4922898079409).

21100433224015 is a wasteful number, since it uses less digits than its factorization.

21100433224015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191007.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 21100433224015 its reverse (51042233400112), we get a palindrome (72142666624127).

The spelling of 21100433224015 in words is "twenty-one trillion, one hundred billion, four hundred thirty-three million, two hundred twenty-four thousand, fifteen".