212123103102 has 40 divisors (see below), whose sum is σ = 486905891472. Its totient is φ = 68983120800.

The previous prime is 212123103097. The next prime is 212123103119. The reversal of 212123103102 is 201301321212.

212123103102 is a `hidden beast` number, since 2 + 121 + 231 + 0 + 310 + 2 = 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 19 ways as a sum of consecutive naturals, for example, 15961674 + ... + 15974957.

Almost surely, 2^212123103102 is an apocalyptic number.

212123103102 is an abundant number, since it is smaller than the sum of its proper divisors (274782788370).

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

212123103102 is a wasteful number, since it uses less digits than its factorization.

212123103102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31936686 (or 31936677 counting only the distinct ones).

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

Adding to 212123103102 its reverse (201301321212), we get a palindrome (413424424314).

The spelling of 212123103102 in words is "two hundred twelve billion, one hundred twenty-three million, one hundred three thousand, one hundred two".