121222132111 has 4 divisors (see below), whose sum is σ = 121227691032. Its totient is φ = 121216573192.

The previous prime is 121222132069. The next prime is 121222132139. The reversal of 121222132111 is 111231222121.

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 121222132111 - 2⁷ = 121222131983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222132411) 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, 2746621 + ... + 2790406.

It is an arithmetic number, because the mean of its divisors is an integer number (30306922758).

Almost surely, 2^121222132111 is an apocalyptic number.

121222132111 is a deficient number, since it is larger than the sum of its proper divisors (5558921).

121222132111 is an equidigital number, since it uses as much as digits as its factorization.

121222132111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5558920.

The product of its digits is 96, while the sum is 19.

Adding to 121222132111 its reverse (111231222121), we get a palindrome (232453354232).

It can be divided in two parts, 12122213 and 2111, that added together give a square (12124324 = 3482²).

The spelling of 121222132111 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred thirty-two thousand, one hundred eleven".