21230122302 has 32 divisors (see below), whose sum is σ = 49661107200. Its totient is φ = 6704248824.

The previous prime is 21230122273. The next prime is 21230122339. The reversal of 21230122302 is 20322103212.

21230122302 is a `hidden beast` number, since 212 + 30 + 122 + 302 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10345038 + ... + 10347089.

It is an arithmetic number, because the mean of its divisors is an integer number (1551909600).

Almost surely, 2^21230122302 is an apocalyptic number.

21230122302 is an abundant number, since it is smaller than the sum of its proper divisors (28430984898).

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

21230122302 is a wasteful number, since it uses less digits than its factorization.

21230122302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20692157 (or 20692151 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21230122302 its reverse (20322103212), we get a palindrome (41552225514).

The spelling of 21230122302 in words is "twenty-one billion, two hundred thirty million, one hundred twenty-two thousand, three hundred two".