221422001223790 has 32 divisors (see below), whose sum is σ = 412314074340480. Its totient is φ = 85512414645504.

The previous prime is 221422001223751. The next prime is 221422001223791. The reversal of 221422001223790 is 97322100224122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221422001223791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 651402 + ... + 21053938.

It is an arithmetic number, because the mean of its divisors is an integer number (12884814823140).

Almost surely, 2^{221422001223790} is an apocalyptic number.

221422001223790 is a deficient number, since it is larger than the sum of its proper divisors (190892073116690).

221422001223790 is a wasteful number, since it uses less digits than its factorization.

221422001223790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20439996.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 221422001223790 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, one million, two hundred twenty-three thousand, seven hundred ninety".