21012322102 has 8 divisors (see below), whose sum is σ = 32535208512. Its totient is φ = 10167252600.

The previous prime is 21012322033. The next prime is 21012322103. The reversal of 21012322102 is 20122321012.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012322103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169454149 + ... + 169454272.

It is an arithmetic number, because the mean of its divisors is an integer number (4066901064).

Almost surely, 2^21012322102 is an apocalyptic number.

21012322102 is a deficient number, since it is larger than the sum of its proper divisors (11522886410).

21012322102 is a wasteful number, since it uses less digits than its factorization.

21012322102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338908454.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21012322102 its reverse (20122321012), we get a palindrome (41134643114).

The spelling of 21012322102 in words is "twenty-one billion, twelve million, three hundred twenty-two thousand, one hundred two".