20120222220121 has 8 divisors (see below), whose sum is σ = 20955054435264. Its totient is φ = 19300708027440.

The previous prime is 20120222220101. The next prime is 20120222220193. The reversal of 20120222220121 is 12102222202102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20120222220121 - 2²⁷ = 20120088002393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120222220101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3829502935 + ... + 3829508188.

It is an arithmetic number, because the mean of its divisors is an integer number (2619381804408).

Almost surely, 2^{20120222220121} is an apocalyptic number.

It is an amenable number.

20120222220121 is a deficient number, since it is larger than the sum of its proper divisors (834832215143).

20120222220121 is an equidigital number, since it uses as much as digits as its factorization.

20120222220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7659011231.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20120222220121 its reverse (12102222202102), we get a palindrome (32222444422223).

The spelling of 20120222220121 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-two million, two hundred twenty thousand, one hundred twenty-one".