22120210121111 has 4 divisors (see below), whose sum is σ = 22120226182224. Its totient is φ = 22120194060000.

The previous prime is 22120210121071. The next prime is 22120210121123. The reversal of 22120210121111 is 11112101202122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22120210121111 is a prime.

It is a super-3 number, since 3×22120210121111³ (a number of 41 digits) contains 333 as substring.

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 22120210121111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120210121011) 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, 5748515 + ... + 8791236.

It is an arithmetic number, because the mean of its divisors is an integer number (5530056545556).

Almost surely, 2^{22120210121111} is an apocalyptic number.

22120210121111 is a deficient number, since it is larger than the sum of its proper divisors (16061113).

22120210121111 is a wasteful number, since it uses less digits than its factorization.

22120210121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16061112.

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

Adding to 22120210121111 its reverse (11112101202122), we get a palindrome (33232311323233).

The spelling of 22120210121111 in words is "twenty-two trillion, one hundred twenty billion, two hundred ten million, one hundred twenty-one thousand, one hundred eleven".