221422122401650 has 12 divisors (see below), whose sum is σ = 411845147667162. Its totient is φ = 88568848960640.

The previous prime is 221422122401609. The next prime is 221422122401659. The reversal of 221422122401650 is 56104221224122.

It can be written as a sum of positive squares in 3 ways, for example, as 193771383392041 + 27650739009609 = 13920179^2 + 5258397^2 .

It is not an unprimeable number, because it can be changed into a prime (221422122401659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2214221223967 + ... + 2214221224066.

Almost surely, 2^{221422122401650} is an apocalyptic number.

221422122401650 is a deficient number, since it is larger than the sum of its proper divisors (190423025265512).

221422122401650 is a wasteful number, since it uses less digits than its factorization.

221422122401650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428442448045 (or 4428442448040 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

Adding to 221422122401650 its reverse (56104221224122), we get a palindrome (277526343625772).

The spelling of 221422122401650 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, one hundred twenty-two million, four hundred one thousand, six hundred fifty".