11212022220121 has 4 divisors (see below), whose sum is σ = 11212951071744. Its totient is φ = 11211093368500.

The previous prime is 11212022219987. The next prime is 11212022220131. The reversal of 11212022220121 is 12102222021211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11212022220121 - 2³⁵ = 11177662481753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212022220131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464407705 + ... + 464431846.

It is an arithmetic number, because the mean of its divisors is an integer number (2803237767936).

Almost surely, 2^{11212022220121} is an apocalyptic number.

It is an amenable number.

11212022220121 is a deficient number, since it is larger than the sum of its proper divisors (928851623).

11212022220121 is an equidigital number, since it uses as much as digits as its factorization.

11212022220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928851622.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11212022220121 its reverse (12102222021211), we get a palindrome (23314244241332).

The spelling of 11212022220121 in words is "eleven trillion, two hundred twelve billion, twenty-two million, two hundred twenty thousand, one hundred twenty-one".