20221110112121 has 16 divisors (see below), whose sum is σ = 21111395679360. Its totient is φ = 19331752133760.

The previous prime is 20221110112117. The next prime is 20221110112241. The reversal of 20221110112121 is 12121101112202.

It is a cyclic number.

It is not a de Polignac number, because 20221110112121 - 2² = 20221110112117 is a prime.

It is a super-2 number, since 2×20221110112121² (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 20221110112121.

It is not an unprimeable number, because it can be changed into a prime (20221110312121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624458351 + ... + 624490731.

It is an arithmetic number, because the mean of its divisors is an integer number (1319462229960).

Almost surely, 2^{20221110112121} is an apocalyptic number.

It is an amenable number.

20221110112121 is a deficient number, since it is larger than the sum of its proper divisors (890285567239).

20221110112121 is a wasteful number, since it uses less digits than its factorization.

20221110112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45856.

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

Adding to 20221110112121 its reverse (12121101112202), we get a palindrome (32342211224323).

The spelling of 20221110112121 in words is "twenty trillion, two hundred twenty-one billion, one hundred ten million, one hundred twelve thousand, one hundred twenty-one".