21202132101 has 16 divisors (see below), whose sum is σ = 28753536000. Its totient is φ = 13894319088.

The previous prime is 21202132051. The next prime is 21202132123. The reversal of 21202132101 is 10123120212.

It is not a de Polignac number, because 21202132101 - 2¹⁴ = 21202115717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202132801) 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, 143251 + ... + 250848.

It is an arithmetic number, because the mean of its divisors is an integer number (1797096000).

Almost surely, 2^21202132101 is an apocalyptic number.

It is an amenable number.

21202132101 is a deficient number, since it is larger than the sum of its proper divisors (7551403899).

21202132101 is a wasteful number, since it uses less digits than its factorization.

21202132101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394408.

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

Adding to 21202132101 its reverse (10123120212), we get a palindrome (31325252313).

The spelling of 21202132101 in words is "twenty-one billion, two hundred two million, one hundred thirty-two thousand, one hundred one".