21022202022111 has 16 divisors (see below), whose sum is σ = 31146979998720. Its totient is φ = 14013461696760.

The previous prime is 21022202022079. The next prime is 21022202022127. The reversal of 21022202022111 is 11122020222012.

It is a happy number.

21022202022111 is a `hidden beast` number, since 210 + 2 + 220 + 2 + 0 + 221 + 11 = 666.

It is not a de Polignac number, because 21022202022111 - 2⁵ = 21022202022079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022202027111) 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, 36924805 + ... + 37489806.

It is an arithmetic number, because the mean of its divisors is an integer number (1946686249920).

Almost surely, 2^{21022202022111} is an apocalyptic number.

21022202022111 is a deficient number, since it is larger than the sum of its proper divisors (10124777976609).

21022202022111 is a wasteful number, since it uses less digits than its factorization.

21022202022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74425083 (or 74425077 counting only the distinct ones).

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

Adding to 21022202022111 its reverse (11122020222012), we get a palindrome (32144222244123).

The spelling of 21022202022111 in words is "twenty-one trillion, twenty-two billion, two hundred two million, twenty-two thousand, one hundred eleven".