212020202221121 has 8 divisors (see below), whose sum is σ = 242371237200384. Its totient is φ = 181684775907360.

The previous prime is 212020202221117. The next prime is 212020202221123. The reversal of 212020202221121 is 121122202020212.

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 212020202221121 - 2² = 212020202221117 is a prime.

It is a super-2 number, since 2×212020202221121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212020202221093 and 212020202221102.

It is not an unprimeable number, because it can be changed into a prime (212020202221123) 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, 3902137265 + ... + 3902191598.

It is an arithmetic number, because the mean of its divisors is an integer number (30296404650048).

Almost surely, 2^{212020202221121} is an apocalyptic number.

It is an amenable number.

212020202221121 is a deficient number, since it is larger than the sum of its proper divisors (30351034979263).

212020202221121 is an equidigital number, since it uses as much as digits as its factorization.

212020202221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7804332751.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 212020202221121 its reverse (121122202020212), we get a palindrome (333142404241333).

The spelling of 212020202221121 in words is "two hundred twelve trillion, twenty billion, two hundred two million, two hundred twenty-one thousand, one hundred twenty-one".