202120112221121 has 8 divisors (see below), whose sum is σ = 203736245806080. Its totient is φ = 200504363583888.

The previous prime is 202120112221109. The next prime is 202120112221193. The reversal of 202120112221121 is 121122211021202.

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 202120112221121 - 2³⁰ = 202119038479297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202120112221093 and 202120112221102.

It is not an unprimeable number, because it can be changed into a prime (202120112229121) 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, 95182571 + ... + 97282896.

It is an arithmetic number, because the mean of its divisors is an integer number (25467030725760).

Almost surely, 2^{202120112221121} is an apocalyptic number.

It is an amenable number.

202120112221121 is a deficient number, since it is larger than the sum of its proper divisors (1616133584959).

202120112221121 is a wasteful number, since it uses less digits than its factorization.

202120112221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192473863.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 202120112221121 its reverse (121122211021202), we get a palindrome (323242323242323).

The spelling of 202120112221121 in words is "two hundred two trillion, one hundred twenty billion, one hundred twelve million, two hundred twenty-one thousand, one hundred twenty-one".