21032442101 has 16 divisors (see below), whose sum is σ = 23396750208. Its totient is φ = 18747192000.

The previous prime is 21032442077. The next prime is 21032442131. The reversal of 21032442101 is 10124423012.

It is a cyclic number.

It is not a de Polignac number, because 21032442101 - 2³⁰ = 19958700277 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 (21032442131) 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, 22535 + ... + 206331.

It is an arithmetic number, because the mean of its divisors is an integer number (1462296888).

Almost surely, 2^21032442101 is an apocalyptic number.

It is an amenable number.

21032442101 is a deficient number, since it is larger than the sum of its proper divisors (2364308107).

21032442101 is a wasteful number, since it uses less digits than its factorization.

21032442101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184012.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21032442101 its reverse (10124423012), we get a palindrome (31156865113).

The spelling of 21032442101 in words is "twenty-one billion, thirty-two million, four hundred forty-two thousand, one hundred one".