121222202211 has 32 divisors (see below), whose sum is σ = 196082538240. Its totient is φ = 73405051200.

The previous prime is 121222202207. The next prime is 121222202261. The reversal of 121222202211 is 112202222121.

It is a happy number.

It is not a de Polignac number, because 121222202211 - 2² = 121222202207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121222202261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173511 + ... + 522063.

It is an arithmetic number, because the mean of its divisors is an integer number (6127579320).

Almost surely, 2^121222202211 is an apocalyptic number.

121222202211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121222202211 is a deficient number, since it is larger than the sum of its proper divisors (74860336029).

121222202211 is a wasteful number, since it uses less digits than its factorization.

121222202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349744 (or 349738 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121222202211 its reverse (112202222121), we get a palindrome (233424424332).

The spelling of 121222202211 in words is "one hundred twenty-one billion, two hundred twenty-two million, two hundred two thousand, two hundred eleven".