212123092 has 12 divisors (see below), whose sum is σ = 375043060. Its totient is φ = 104967936.

The previous prime is 212123083. The next prime is 212123117. The reversal of 212123092 is 290321212.

It can be written as a sum of positive squares in 2 ways, for example, as 96904336 + 115218756 = 9844^2 + 10734^2 .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272967 + ... + 273742.

Almost surely, 2^212123092 is an apocalyptic number.

It is an amenable number.

212123092 is a deficient number, since it is larger than the sum of its proper divisors (162919968).

212123092 is a wasteful number, since it uses less digits than its factorization.

212123092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546810 (or 546808 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 212123092 is about 14564.4461618010. The cubic root of 212123092 is about 596.3885766857.

The spelling of 212123092 in words is "two hundred twelve million, one hundred twenty-three thousand, ninety-two".