121222022011 has 4 divisors (see below), whose sum is σ = 121272936624. Its totient is φ = 121171107400.

The previous prime is 121222021981. The next prime is 121222022029. The reversal of 121222022011 is 110220222121.

It is a happy number.

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 121222022011 - 2²⁹ = 120685151099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121222022071) 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, 25453735 + ... + 25458496.

It is an arithmetic number, because the mean of its divisors is an integer number (30318234156).

Almost surely, 2^121222022011 is an apocalyptic number.

121222022011 is a deficient number, since it is larger than the sum of its proper divisors (50914613).

121222022011 is an equidigital number, since it uses as much as digits as its factorization.

121222022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50914612.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121222022011 its reverse (110220222121), we get a palindrome (231442244132).

The spelling of 121222022011 in words is "one hundred twenty-one billion, two hundred twenty-two million, twenty-two thousand, eleven".