21101132999 has 2 divisors, whose sum is σ = 21101133000. Its totient is φ = 21101132998.

The previous prime is 21101132959. The next prime is 21101133029. The reversal of 21101132999 is 99923110112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21101132999 - 2¹² = 21101128903 is a prime.

It is a super-3 number, since 3×21101132999³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21101132959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550566499 + 10550566500.

It is an arithmetic number, because the mean of its divisors is an integer number (10550566500).

Almost surely, 2^21101132999 is an apocalyptic number.

21101132999 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101132999 is an equidigital number, since it uses as much as digits as its factorization.

21101132999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 38.

It can be divided in two parts, 2110113 and 2999, that added together give a palindrome (2113112).

The spelling of 21101132999 in words is "twenty-one billion, one hundred one million, one hundred thirty-two thousand, nine hundred ninety-nine".