20221021121123 has 32 divisors (see below), whose sum is σ = 20743192903680. Its totient is φ = 19707618712320.

The previous prime is 20221021121111. The next prime is 20221021121177. The reversal of 20221021121123 is 32112112012202.

It is a cyclic number.

It is not a de Polignac number, because 20221021121123 - 2³⁰ = 20219947379299 is a prime.

It is a super-2 number, since 2×20221021121123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20221021121095 and 20221021121104.

It is not an unprimeable number, because it can be changed into a prime (20221021121183) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3658586186 + ... + 3658591712.

It is an arithmetic number, because the mean of its divisors is an integer number (648224778240).

Almost surely, 2^{20221021121123} is an apocalyptic number.

20221021121123 is a deficient number, since it is larger than the sum of its proper divisors (522171782557).

20221021121123 is a wasteful number, since it uses less digits than its factorization.

20221021121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7787.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 20221021121123 its reverse (32112112012202), we get a palindrome (52333133133325).

The spelling of 20221021121123 in words is "twenty trillion, two hundred twenty-one billion, twenty-one million, one hundred twenty-one thousand, one hundred twenty-three".