212436122 has 4 divisors (see below), whose sum is σ = 318654186. Its totient is φ = 106218060.

The previous prime is 212436113. The next prime is 212436127. The reversal of 212436122 is 221634212.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 164839921 + 47596201 = 12839^2 + 6899^2 .

It is not an unprimeable number, because it can be changed into a prime (212436127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53109029 + ... + 53109032.

Almost surely, 2^212436122 is an apocalyptic number.

212436122 is a deficient number, since it is larger than the sum of its proper divisors (106218064).

212436122 is a wasteful number, since it uses less digits than its factorization.

212436122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106218063.

The product of its digits is 1152, while the sum is 23.

The square root of 212436122 is about 14575.1885751094. The cubic root of 212436122 is about 596.6817959953.

The spelling of 212436122 in words is "two hundred twelve million, four hundred thirty-six thousand, one hundred twenty-two".