221021223332 has 48 divisors (see below), whose sum is σ = 476093476992. Its totient is φ = 87428194560.

The previous prime is 221021223329. The next prime is 221021223347. The reversal of 221021223332 is 233322120122.

It is a junction number, because it is equal to n+sod(n) for n = 221021223298 and 221021223307.

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, 4545107 + ... + 4593477.

It is an arithmetic number, because the mean of its divisors is an integer number (9918614104).

Almost surely, 2^221021223332 is an apocalyptic number.

It is an amenable number.

221021223332 is an abundant number, since it is smaller than the sum of its proper divisors (255072253660).

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

221021223332 is a wasteful number, since it uses less digits than its factorization.

221021223332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60948 (or 60946 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 221021223332 its reverse (233322120122), we get a palindrome (454343343454).

The spelling of 221021223332 in words is "two hundred twenty-one billion, twenty-one million, two hundred twenty-three thousand, three hundred thirty-two".