21299999999907 has 16 divisors (see below), whose sum is σ = 28406655623168. Its totient is φ = 14196672554400.

The previous prime is 21299999999899. The next prime is 21299999999911. The reversal of 21299999999907 is 70999999999212.

It is not a de Polignac number, because 21299999999907 - 2³ = 21299999999899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21299999999947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309275358 + ... + 309344220.

It is an arithmetic number, because the mean of its divisors is an integer number (1775415976448).

Almost surely, 2^{21299999999907} is an apocalyptic number.

21299999999907 is a deficient number, since it is larger than the sum of its proper divisors (7106655623261).

21299999999907 is a wasteful number, since it uses less digits than its factorization.

21299999999907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91530.

The product of its (nonzero) digits is 10847773692, while the sum is 93.

The spelling of 21299999999907 in words is "twenty-one trillion, two hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred seven".