122211022121211 has 4 divisors (see below), whose sum is σ = 162948029494952. Its totient is φ = 81474014747472.

The previous prime is 122211022121207. The next prime is 122211022121219. The reversal of 122211022121211 is 112121220112221.

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

It is not a de Polignac number, because 122211022121211 - 2² = 122211022121207 is a prime.

It is a super-2 number, since 2×122211022121211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122211022121219) 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, 20368503686866 + ... + 20368503686871.

It is an arithmetic number, because the mean of its divisors is an integer number (40737007373738).

Almost surely, 2^{122211022121211} is an apocalyptic number.

122211022121211 is a deficient number, since it is larger than the sum of its proper divisors (40737007373741).

122211022121211 is an equidigital number, since it uses as much as digits as its factorization.

122211022121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40737007373740.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 122211022121211 its reverse (112121220112221), we get a palindrome (234332242233432).

The spelling of 122211022121211 in words is "one hundred twenty-two trillion, two hundred eleven billion, twenty-two million, one hundred twenty-one thousand, two hundred eleven".