22111212012101 has 4 divisors (see below), whose sum is σ = 22216004486304. Its totient is φ = 22006419537900.

The previous prime is 22111212012047. The next prime is 22111212012151. The reversal of 22111212012101 is 10121021211122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22111212012101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22111212012101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111212012151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52396236785 + ... + 52396237206.

It is an arithmetic number, because the mean of its divisors is an integer number (5554001121576).

Almost surely, 2^{22111212012101} is an apocalyptic number.

It is an amenable number.

22111212012101 is a deficient number, since it is larger than the sum of its proper divisors (104792474203).

22111212012101 is a wasteful number, since it uses less digits than its factorization.

22111212012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104792474202.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 22111212012101 its reverse (10121021211122), we get a palindrome (32232233223223).

The spelling of 22111212012101 in words is "twenty-two trillion, one hundred eleven billion, two hundred twelve million, twelve thousand, one hundred one".