21868337001 has 32 divisors (see below), whose sum is σ = 33527808000. Its totient is φ = 12419579520.

The previous prime is 21868336999. The next prime is 21868337009. The reversal of 21868337001 is 10073386812.

It is not a de Polignac number, because 21868337001 - 2¹ = 21868336999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21868337009) 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 31 ways as a sum of consecutive naturals, for example, 6813085 + ... + 6816293.

It is an arithmetic number, because the mean of its divisors is an integer number (1047744000).

Almost surely, 2^21868337001 is an apocalyptic number.

21868337001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21868337001 is a deficient number, since it is larger than the sum of its proper divisors (11659470999).

21868337001 is a wasteful number, since it uses less digits than its factorization.

21868337001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5109.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 21868337001 in words is "twenty-one billion, eight hundred sixty-eight million, three hundred thirty-seven thousand, one".