212123104 has 12 divisors (see below), whose sum is σ = 417617424. Its totient is φ = 106061536.

The previous prime is 212123083. The next prime is 212123117. The reversal of 212123104 is 401321212.

212123104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212123104² = 89992422501189632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3314392 + ... + 3314455.

It is an arithmetic number, because the mean of its divisors is an integer number (34801452).

Almost surely, 2^212123104 is an apocalyptic number.

It is an amenable number.

212123104 is a deficient number, since it is larger than the sum of its proper divisors (205494320).

212123104 is an equidigital number, since it uses as much as digits as its factorization.

212123104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6628857 (or 6628849 counting only the distinct ones).

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

The square root of 212123104 is about 14564.4465737631. The cubic root of 212123104 is about 596.3885879317.

Adding to 212123104 its reverse (401321212), we get a palindrome (613444316).

The spelling of 212123104 in words is "two hundred twelve million, one hundred twenty-three thousand, one hundred four".