212409022 has 12 divisors (see below), whose sum is σ = 370632240. Its totient is φ = 91032396.

The previous prime is 212409013. The next prime is 212409031. The reversal of 212409022 is 220904212.

It is an interprime number because it is at equal distance from previous prime (212409013) and next prime (212409031).

It is a junction number, because it is equal to n+sod(n) for n = 212408984 and 212409002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1083622 + ... + 1083817.

It is an arithmetic number, because the mean of its divisors is an integer number (30886020).

Almost surely, 2^212409022 is an apocalyptic number.

212409022 is a deficient number, since it is larger than the sum of its proper divisors (158223218).

212409022 is a wasteful number, since it uses less digits than its factorization.

212409022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167455 (or 2167448 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 212409022 is about 14574.2588833875. The cubic root of 212409022 is about 596.6564224632.

The spelling of 212409022 in words is "two hundred twelve million, four hundred nine thousand, twenty-two".