22021121212101 has 48 divisors (see below), whose sum is σ = 34788062200320. Its totient is φ = 13312276227360.

The previous prime is 22021121212093. The next prime is 22021121212147. The reversal of 22021121212101 is 10121212112022.

22021121212101 is a `hidden beast` number, since 220 + 2 + 112 + 121 + 210 + 1 = 666.

It is not a de Polignac number, because 22021121212101 - 2³ = 22021121212093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021121212201) 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, 83073310 + ... + 83337968.

It is an arithmetic number, because the mean of its divisors is an integer number (724751295840).

Almost surely, 2^{22021121212101} is an apocalyptic number.

It is an amenable number.

22021121212101 is a deficient number, since it is larger than the sum of its proper divisors (12766940988219).

22021121212101 is a wasteful number, since it uses less digits than its factorization.

22021121212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266806 (or 266803 counting only the distinct ones).

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

Adding to 22021121212101 its reverse (10121212112022), we get a palindrome (32142333324123).

It can be divided in two parts, 22021121 and 212101, that added together give a palindrome (22233222).

The spelling of 22021121212101 in words is "twenty-two trillion, twenty-one billion, one hundred twenty-one million, two hundred twelve thousand, one hundred one".