221112022022121 has 16 divisors (see below), whose sum is σ = 319771762123968. Its totient is φ = 135353126822400.

The previous prime is 221112022022107. The next prime is 221112022022131. The reversal of 221112022022121 is 121220220211122.

It is not a de Polignac number, because 221112022022121 - 2¹³ = 221112022013929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221112022022131) 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, 52872313075 + ... + 52872317256.

It is an arithmetic number, because the mean of its divisors is an integer number (19985735132748).

Almost surely, 2^{221112022022121} is an apocalyptic number.

It is an amenable number.

221112022022121 is a deficient number, since it is larger than the sum of its proper divisors (98659740101847).

221112022022121 is a wasteful number, since it uses less digits than its factorization.

221112022022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105744630392.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221112022022121 its reverse (121220220211122), we get a palindrome (342332242233243).

The spelling of 221112022022121 in words is "two hundred twenty-one trillion, one hundred twelve billion, twenty-two million, twenty-two thousand, one hundred twenty-one".