221604051022 has 8 divisors (see below), whose sum is σ = 332408729016. Its totient is φ = 110801141352.

The previous prime is 221604051001. The next prime is 221604051041. The reversal of 221604051022 is 220150406122.

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

It is a super-2 number, since 2×221604051022² (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, 64173 + ... + 668824.

It is an arithmetic number, because the mean of its divisors is an integer number (41551091127).

Almost surely, 2^221604051022 is an apocalyptic number.

221604051022 is a deficient number, since it is larger than the sum of its proper divisors (110804677994).

221604051022 is a wasteful number, since it uses less digits than its factorization.

221604051022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884162.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 221604051022 its reverse (220150406122), we get a palindrome (441754457144).

The spelling of 221604051022 in words is "two hundred twenty-one billion, six hundred four million, fifty-one thousand, twenty-two".