212265136 has 20 divisors (see below), whose sum is σ = 413357472. Its totient is φ = 105592256.

The previous prime is 212265121. The next prime is 212265139. The reversal of 212265136 is 631562212.

212265136 = 2560² + 2561² + ... + 2591².

It is a super-2 number, since 2×212265136² = 90112975922196992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212265139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30520 + ... + 36823.

Almost surely, 2^212265136 is an apocalyptic number.

It is an amenable number.

212265136 is a deficient number, since it is larger than the sum of its proper divisors (201092336).

212265136 is a wasteful number, since it uses less digits than its factorization.

212265136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67548 (or 67542 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 212265136 is about 14569.3217412479. The cubic root of 212265136 is about 596.5216668902.

It can be divided in two parts, 21226 and 5136, that added together give a palindrome (26362).

The spelling of 212265136 in words is "two hundred twelve million, two hundred sixty-five thousand, one hundred thirty-six".