221657273334220 has 48 divisors (see below), whose sum is σ = 468519526490400. Its totient is φ = 88084183509504.

The previous prime is 221657273334191. The next prime is 221657273334239. The reversal of 221657273334220 is 22433372756122.

221657273334220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221657273334220² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14175472 + ... + 25382248.

It is an arithmetic number, because the mean of its divisors is an integer number (9760823468550).

Almost surely, 2^{221657273334220} is an apocalyptic number.

221657273334220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221657273334220 is an abundant number, since it is smaller than the sum of its proper divisors (246862253156180).

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

221657273334220 is a wasteful number, since it uses less digits than its factorization.

221657273334220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11213242 (or 11213240 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 49.

The spelling of 221657273334220 in words is "two hundred twenty-one trillion, six hundred fifty-seven billion, two hundred seventy-three million, three hundred thirty-four thousand, two hundred twenty".