321681542022 has 112 divisors (see below), whose sum is σ = 740630877840. Its totient is φ = 104706561600.

The previous prime is 321681542011. The next prime is 321681542027. The reversal of 321681542022 is 220245186123.

321681542022 is a `hidden beast` number, since 3 + 2 + 16 + 81 + 542 + 0 + 22 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321681542027) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 12349372 + ... + 12375392.

It is an arithmetic number, because the mean of its divisors is an integer number (6612775695).

Almost surely, 2^321681542022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321681542022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370315438920).

321681542022 is an abundant number, since it is smaller than the sum of its proper divisors (418949335818).

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

321681542022 is a wasteful number, since it uses less digits than its factorization.

321681542022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26241 (or 26226 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 321681542022 in words is "three hundred twenty-one billion, six hundred eighty-one million, five hundred forty-two thousand, twenty-two".