21612630512101 has 8 divisors (see below), whose sum is σ = 21939719657600. Its totient is φ = 21286879155360.

The previous prime is 21612630512093. The next prime is 21612630512107. The reversal of 21612630512101 is 10121503621612.

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 21612630512101 - 2³ = 21612630512093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21612630512107) 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, 334414635 + ... + 334479256.

It is an arithmetic number, because the mean of its divisors is an integer number (2742464957200).

Almost surely, 2^{21612630512101} is an apocalyptic number.

It is an amenable number.

21612630512101 is a deficient number, since it is larger than the sum of its proper divisors (327089145499).

21612630512101 is an equidigital number, since it uses as much as digits as its factorization.

21612630512101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668894379.

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 21612630512101 in words is "twenty-one trillion, six hundred twelve billion, six hundred thirty million, five hundred twelve thousand, one hundred one".