21032122101 has 12 divisors (see below), whose sum is σ = 29789442912. Its totient is φ = 13196625088.

The previous prime is 21032122099. The next prime is 21032122151. The reversal of 21032122101 is 10122123012.

It is not a de Polignac number, because 21032122101 - 2¹ = 21032122099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032122151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12128385 + ... + 12130118.

It is an arithmetic number, because the mean of its divisors is an integer number (2482453576).

Almost surely, 2^21032122101 is an apocalyptic number.

It is an amenable number.

21032122101 is a deficient number, since it is larger than the sum of its proper divisors (8757320811).

21032122101 is a wasteful number, since it uses less digits than its factorization.

21032122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24258540 (or 24258523 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21032122101 its reverse (10122123012), we get a palindrome (31154245113).

The spelling of 21032122101 in words is "twenty-one billion, thirty-two million, one hundred twenty-two thousand, one hundred one".