21223113102 has 28 divisors (see below), whose sum is σ = 47730173280. Its totient is φ = 7074370548.

The previous prime is 21223113101. The next prime is 21223113103. The reversal of 21223113102 is 20131132212.

21223113102 is a `hidden beast` number, since 21 + 22 + 311 + 310 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (21223113101) and next prime (21223113103).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223113101) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 7276702 + ... + 7279617.

Almost surely, 2^21223113102 is an apocalyptic number.

21223113102 is an abundant number, since it is smaller than the sum of its proper divisors (26507060178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21223113102 is an equidigital number, since it uses as much as digits as its factorization.

21223113102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14556339 (or 14556324 counting only the distinct ones).

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

Adding to 21223113102 its reverse (20131132212), we get a palindrome (41354245314).

The spelling of 21223113102 in words is "twenty-one billion, two hundred twenty-three million, one hundred thirteen thousand, one hundred two".