21661032115022 has 8 divisors (see below), whose sum is σ = 33369698123256. Its totient is φ = 10537799407272.

The previous prime is 21661032114973. The next prime is 21661032115027. The reversal of 21661032115022 is 22051123016612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21661032115022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21661032115027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146358325028 + ... + 146358325175.

It is an arithmetic number, because the mean of its divisors is an integer number (4171212265407).

Almost surely, 2^{21661032115022} is an apocalyptic number.

21661032115022 is a deficient number, since it is larger than the sum of its proper divisors (11708666008234).

21661032115022 is a wasteful number, since it uses less digits than its factorization.

21661032115022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292716650242.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 21661032115022 in words is "twenty-one trillion, six hundred sixty-one billion, thirty-two million, one hundred fifteen thousand, twenty-two".