20212202022121 has 8 divisors (see below), whose sum is σ = 20423925035360. Its totient is φ = 20001426316128.

The previous prime is 20212202022107. The next prime is 20212202022143. The reversal of 20212202022121 is 12122020221202.

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 20212202022121 - 2³⁷ = 20074763068649 is a prime.

It is a super-2 number, since 2×20212202022121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212202022161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236783916 + ... + 236869261.

It is an arithmetic number, because the mean of its divisors is an integer number (2552990629420).

Almost surely, 2^{20212202022121} is an apocalyptic number.

It is an amenable number.

20212202022121 is a deficient number, since it is larger than the sum of its proper divisors (211723013239).

20212202022121 is a wasteful number, since it uses less digits than its factorization.

20212202022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473653623.

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

Adding to 20212202022121 its reverse (12122020221202), we get a palindrome (32334222243323).

The spelling of 20212202022121 in words is "twenty trillion, two hundred twelve billion, two hundred two million, twenty-two thousand, one hundred twenty-one".