20220222122121 has 48 divisors (see below), whose sum is σ = 33410522723904. Its totient is φ = 10808024887296.

The previous prime is 20220222122101. The next prime is 20220222122171. The reversal of 20220222122121 is 12122122202202.

It is not a de Polignac number, because 20220222122121 - 2⁹ = 20220222121609 is a prime.

It is a super-2 number, since 2×20220222122121² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20220222122101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24412680 + ... + 25227353.

It is an arithmetic number, because the mean of its divisors is an integer number (696052556748).

Almost surely, 2^{20220222122121} is an apocalyptic number.

20220222122121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20220222122121 is a deficient number, since it is larger than the sum of its proper divisors (13190300601783).

20220222122121 is a wasteful number, since it uses less digits than its factorization.

20220222122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49640230 (or 49640223 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 20220222122121 its reverse (12122122202202), we get a palindrome (32342344324323).

The spelling of 20220222122121 in words is "twenty trillion, two hundred twenty billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".