22120021212111 has 48 divisors (see below), whose sum is σ = 33920976180000. Its totient is φ = 14400663667200.

The previous prime is 22120021212097. The next prime is 22120021212161. The reversal of 22120021212111 is 11121212002122.

22120021212111 is a `hidden beast` number, since 221 + 20 + 0 + 212 + 1 + 211 + 1 = 666.

It is not a de Polignac number, because 22120021212111 - 2²¹ = 22120019114959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120021212161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4381486 + ... + 7964763.

It is an arithmetic number, because the mean of its divisors is an integer number (706687003750).

Almost surely, 2^{22120021212111} is an apocalyptic number.

22120021212111 is a deficient number, since it is larger than the sum of its proper divisors (11800954967889).

22120021212111 is a wasteful number, since it uses less digits than its factorization.

22120021212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12346438 (or 12346426 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22120021212111 its reverse (11121212002122), we get a palindrome (33241233214233).

The spelling of 22120021212111 in words is "twenty-two trillion, one hundred twenty billion, twenty-one million, two hundred twelve thousand, one hundred eleven".