212740637322 has 16 divisors (see below), whose sum is σ = 425636536032. Its totient is φ = 70887668880.

The previous prime is 212740637233. The next prime is 212740637323. The reversal of 212740637322 is 223736047212.

It is not an unprimeable number, because it can be changed into a prime (212740637323) 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 7 ways as a sum of consecutive naturals, for example, 6451408 + ... + 6484299.

It is an arithmetic number, because the mean of its divisors is an integer number (26602283502).

Almost surely, 2^212740637322 is an apocalyptic number.

212740637322 is an abundant number, since it is smaller than the sum of its proper divisors (212895898710).

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

212740637322 is a wasteful number, since it uses less digits than its factorization.

212740637322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12938453.

The product of its (nonzero) digits is 169344, while the sum is 39.

The spelling of 212740637322 in words is "two hundred twelve billion, seven hundred forty million, six hundred thirty-seven thousand, three hundred twenty-two".