221020022122122 has 32 divisors (see below), whose sum is σ = 445229799920640. Its totient is φ = 73141737646320.

The previous prime is 221020022122103. The next prime is 221020022122169. The reversal of 221020022122122 is 221221220020122.

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, 36113097 + ... + 41787507.

It is an arithmetic number, because the mean of its divisors is an integer number (13913431247520).

Almost surely, 2^{221020022122122} is an apocalyptic number.

221020022122122 is an abundant number, since it is smaller than the sum of its proper divisors (224209777798518).

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

221020022122122 is a wasteful number, since it uses less digits than its factorization.

221020022122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5721258.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221020022122122 its reverse (221221220020122), we get a palindrome (442241242142244).

The spelling of 221020022122122 in words is "two hundred twenty-one trillion, twenty billion, twenty-two million, one hundred twenty-two thousand, one hundred twenty-two".