121222220020211 has 4 divisors (see below), whose sum is σ = 127602336863400. Its totient is φ = 114842103177024.

The previous prime is 121222220020171. The next prime is 121222220020219. The reversal of 121222220020211 is 112020022222121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121222220020211 - 2³⁸ = 120947342113267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121222220020219) 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, 3190058421566 + ... + 3190058421603.

It is an arithmetic number, because the mean of its divisors is an integer number (31900584215850).

Almost surely, 2^{121222220020211} is an apocalyptic number.

121222220020211 is a deficient number, since it is larger than the sum of its proper divisors (6380116843189).

121222220020211 is an equidigital number, since it uses as much as digits as its factorization.

121222220020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6380116843188.

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

Adding to 121222220020211 its reverse (112020022222121), we get a palindrome (233242242242332).

The spelling of 121222220020211 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, two hundred twenty million, twenty thousand, two hundred eleven".