221442042342204 has 18 divisors (see below), whose sum is σ = 559756273698440. Its totient is φ = 73814014114056.

The previous prime is 221442042342179. The next prime is 221442042342289. The reversal of 221442042342204 is 402243240244122.

221442042342204 is a `hidden beast` number, since 2 + 2 + 1 + 4 + 4 + 2 + 0 + 423 + 4 + 220 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 6151167842839 = 221442042342204 / (2 + 2 + 1 + 4 + 4 + 2 + 0 + 4 + 2 + 3 + 4 + 2 + 2 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3075583921384 + ... + 3075583921455.

Almost surely, 2^{221442042342204} is an apocalyptic number.

It is an amenable number.

221442042342204 is an abundant number, since it is smaller than the sum of its proper divisors (338314231356236).

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

221442042342204 is a wasteful number, since it uses less digits than its factorization.

221442042342204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6151167842849 (or 6151167842844 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 36.

Adding to 221442042342204 its reverse (402243240244122), we get a palindrome (623685282586326).

The spelling of 221442042342204 in words is "two hundred twenty-one trillion, four hundred forty-two billion, forty-two million, three hundred forty-two thousand, two hundred four".