20022100220121 has 64 divisors (see below), whose sum is σ = 28883197624320. Its totient is φ = 12305984201280.

The previous prime is 20022100220071. The next prime is 20022100220123. The reversal of 20022100220121 is 12102200122002.

It is not a de Polignac number, because 20022100220121 - 2⁷ = 20022100219993 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20022100220121.

It is not an unprimeable number, because it can be changed into a prime (20022100220123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 203264160 + ... + 203362638.

It is an arithmetic number, because the mean of its divisors is an integer number (451299962880).

Almost surely, 2^{20022100220121} is an apocalyptic number.

It is an amenable number.

20022100220121 is a deficient number, since it is larger than the sum of its proper divisors (8861097404199).

20022100220121 is a wasteful number, since it uses less digits than its factorization.

20022100220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99506.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20022100220121 its reverse (12102200122002), we get a palindrome (32124300342123).

The spelling of 20022100220121 in words is "twenty trillion, twenty-two billion, one hundred million, two hundred twenty thousand, one hundred twenty-one".