212122350 has 72 divisors (see below), whose sum is σ = 621725832. Its totient is φ = 51422400.

The previous prime is 212122297. The next prime is 212122373. The reversal of 212122350 is 53221212.

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 35 ways as a sum of consecutive naturals, for example, 16477 + ... + 26376.

It is an arithmetic number, because the mean of its divisors is an integer number (8635081).

Almost surely, 2^212122350 is an apocalyptic number.

212122350 is an abundant number, since it is smaller than the sum of its proper divisors (409603482).

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

212122350 is a wasteful number, since it uses less digits than its factorization.

212122350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42882 (or 42874 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 212122350 is about 14564.4206887881. The cubic root of 212122350 is about 596.3878813019.

Adding to 212122350 its reverse (53221212), we get a palindrome (265343562).

The spelling of 212122350 in words is "two hundred twelve million, one hundred twenty-two thousand, three hundred fifty".