20221112110121 has 4 divisors (see below), whose sum is σ = 21776582272452. Its totient is φ = 18665641947792.

The previous prime is 20221112110103. The next prime is 20221112110123. The reversal of 20221112110121 is 12101121112202.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6101216164096 + 14119895946025 = 2470064^2 + 3757645^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221112110121 - 2²² = 20221107915817 is a prime.

It is a super-2 number, since 2×20221112110121² (a number of 27 digits) contains 22 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 20221112110121.

It is not an unprimeable number, because it can be changed into a prime (20221112110123) 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, 777735081146 + ... + 777735081171.

It is an arithmetic number, because the mean of its divisors is an integer number (5444145568113).

Almost surely, 2^{20221112110121} is an apocalyptic number.

It is an amenable number.

20221112110121 is a deficient number, since it is larger than the sum of its proper divisors (1555470162331).

20221112110121 is a wasteful number, since it uses less digits than its factorization.

20221112110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555470162330.

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

Adding to 20221112110121 its reverse (12101121112202), we get a palindrome (32322233222323).

The spelling of 20221112110121 in words is "twenty trillion, two hundred twenty-one billion, one hundred twelve million, one hundred ten thousand, one hundred twenty-one".