221022020011121 has 16 divisors (see below), whose sum is σ = 262999412876928. Its totient is φ = 181796829148800.

The previous prime is 221022020011087. The next prime is 221022020011151. The reversal of 221022020011121 is 121110020220122.

It is a cyclic number.

It is not a de Polignac number, because 221022020011121 - 2⁴² = 216623973500017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221022020011121.

It is not an unprimeable number, because it can be changed into a prime (221022020011151) 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, 6312372395 + ... + 6312407408.

It is an arithmetic number, because the mean of its divisors is an integer number (16437463304808).

Almost surely, 2^{221022020011121} is an apocalyptic number.

It is an amenable number.

221022020011121 is a deficient number, since it is larger than the sum of its proper divisors (41977392865807).

221022020011121 is a wasteful number, since it uses less digits than its factorization.

221022020011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12624779912.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221022020011121 its reverse (121110020220122), we get a palindrome (342132040231243).

The spelling of 221022020011121 in words is "two hundred twenty-one trillion, twenty-two billion, twenty million, eleven thousand, one hundred twenty-one".