212015650556 has 24 divisors (see below), whose sum is σ = 373634325120. Its totient is φ = 105263550000.

The previous prime is 212015650547. The next prime is 212015650559. The reversal of 212015650556 is 655056510212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212015650559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1464431 + ... + 1602681.

It is an arithmetic number, because the mean of its divisors is an integer number (15568096880).

Almost surely, 2^212015650556 is an apocalyptic number.

It is an amenable number.

212015650556 is a deficient number, since it is larger than the sum of its proper divisors (161618674564).

212015650556 is a wasteful number, since it uses less digits than its factorization.

212015650556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140945 (or 140943 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 38.

It can be divided in two parts, 2120156 and 50556, that added together give a palindrome (2170712).

The spelling of 212015650556 in words is "two hundred twelve billion, fifteen million, six hundred fifty thousand, five hundred fifty-six".