21230102101 has 8 divisors (see below), whose sum is σ = 23250699360. Its totient is φ = 19264863792.

The previous prime is 21230102099. The next prime is 21230102149. The reversal of 21230102101 is 10120103212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21230102101 - 2¹ = 21230102099 is a prime.

It is a super-2 number, since 2×21230102101² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230102161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13838935 + ... + 13840468.

It is an arithmetic number, because the mean of its divisors is an integer number (2906337420).

Almost surely, 2^21230102101 is an apocalyptic number.

It is an amenable number.

21230102101 is a deficient number, since it is larger than the sum of its proper divisors (2020597259).

21230102101 is a wasteful number, since it uses less digits than its factorization.

21230102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27679475.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21230102101 its reverse (10120103212), we get a palindrome (31350205313).

The spelling of 21230102101 in words is "twenty-one billion, two hundred thirty million, one hundred two thousand, one hundred one".