21332013029 has 4 divisors (see below), whose sum is σ = 21351638784. Its totient is φ = 21312387276.

The previous prime is 21332013023. The next prime is 21332013047. The reversal of 21332013029 is 92031023312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21332013029 - 2⁸ = 21332012773 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21332012989 and 21332013007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332013023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9811247 + ... + 9813420.

It is an arithmetic number, because the mean of its divisors is an integer number (5337909696).

Almost surely, 2^21332013029 is an apocalyptic number.

It is an amenable number.

21332013029 is a deficient number, since it is larger than the sum of its proper divisors (19625755).

21332013029 is a wasteful number, since it uses less digits than its factorization.

21332013029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19625754.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 21332013029 in words is "twenty-one billion, three hundred thirty-two million, thirteen thousand, twenty-nine".