212522039 has 4 divisors (see below), whose sum is σ = 217464456. Its totient is φ = 207579624.

The previous prime is 212522033. The next prime is 212522059. The reversal of 212522039 is 930225212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212522039 - 2²⁴ = 195744823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212521999 and 212522017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212522033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2471144 + ... + 2471229.

It is an arithmetic number, because the mean of its divisors is an integer number (54366114).

Almost surely, 2^212522039 is an apocalyptic number.

212522039 is a deficient number, since it is larger than the sum of its proper divisors (4942417).

212522039 is an equidigital number, since it uses as much as digits as its factorization.

212522039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4942416.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 212522039 is about 14578.1356489779. The cubic root of 212522039 is about 596.7622251925.

The spelling of 212522039 in words is "two hundred twelve million, five hundred twenty-two thousand, thirty-nine".