20221220022111 has 20 divisors (see below), whose sum is σ = 30387887993232. Its totient is φ = 13400089905888.

The previous prime is 20221220022079. The next prime is 20221220022127. The reversal of 20221220022111 is 11122002212202.

It is a happy number.

20221220022111 is a `hidden beast` number, since 2 + 0 + 221 + 220 + 0 + 221 + 1 + 1 = 666.

It is not a de Polignac number, because 20221220022111 - 2⁵ = 20221220022079 is a prime.

It is a super-4 number, since 4×20221220022111⁴ (a number of 54 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221220022181) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 747425670 + ... + 747452723.

Almost surely, 2^{20221220022111} is an apocalyptic number.

20221220022111 is a deficient number, since it is larger than the sum of its proper divisors (10166667971121).

20221220022111 is a wasteful number, since it uses less digits than its factorization.

20221220022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494878572 (or 1494878563 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20221220022111 its reverse (11122002212202), we get a palindrome (31343222234313).

The spelling of 20221220022111 in words is "twenty trillion, two hundred twenty-one billion, two hundred twenty million, twenty-two thousand, one hundred eleven".