21130023202101 has 24 divisors (see below), whose sum is σ = 33372689802816. Its totient is φ = 12776499411840.

The previous prime is 21130023202087. The next prime is 21130023202133. The reversal of 21130023202101 is 10120232003112.

21130023202101 is a `hidden beast` number, since 2 + 1 + 130 + 0 + 2 + 320 + 210 + 1 = 666.

It is not a de Polignac number, because 21130023202101 - 2²¹ = 21130021104949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130023102101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246417385 + ... + 246503118.

It is an arithmetic number, because the mean of its divisors is an integer number (1390528741784).

Almost surely, 2^{21130023202101} is an apocalyptic number.

It is an amenable number.

21130023202101 is a deficient number, since it is larger than the sum of its proper divisors (12242666600715).

21130023202101 is a wasteful number, since it uses less digits than its factorization.

21130023202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492920953 (or 492920950 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21130023202101 its reverse (10120232003112), we get a palindrome (31250255205213).

The spelling of 21130023202101 in words is "twenty-one trillion, one hundred thirty billion, twenty-three million, two hundred two thousand, one hundred one".