220921042654 has 8 divisors (see below), whose sum is σ = 356872453560. Its totient is φ = 101963558136.

The previous prime is 220921042621. The next prime is 220921042687. The reversal of 220921042654 is 456240129022.

It is an interprime number because it is at equal distance from previous prime (220921042621) and next prime (220921042687).

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

It is a super-2 number, since 2×220921042654² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4248481564 + ... + 4248481615.

It is an arithmetic number, because the mean of its divisors is an integer number (44609056695).

Almost surely, 2^220921042654 is an apocalyptic number.

220921042654 is a deficient number, since it is larger than the sum of its proper divisors (135951410906).

220921042654 is a wasteful number, since it uses less digits than its factorization.

220921042654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8496963194.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 220921042654 in words is "two hundred twenty billion, nine hundred twenty-one million, forty-two thousand, six hundred fifty-four".