121022212012111 has 4 divisors (see below), whose sum is σ = 121649270105632. Its totient is φ = 120395153918592.

The previous prime is 121022212012109. The next prime is 121022212012127. The reversal of 121022212012111 is 111210212220121.

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 121022212012111 - 2¹ = 121022212012109 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 (121022212012511) 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, 313529046471 + ... + 313529046856.

It is an arithmetic number, because the mean of its divisors is an integer number (30412317526408).

Almost surely, 2^{121022212012111} is an apocalyptic number.

121022212012111 is a deficient number, since it is larger than the sum of its proper divisors (627058093521).

121022212012111 is an equidigital number, since it uses as much as digits as its factorization.

121022212012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627058093520.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121022212012111 its reverse (111210212220121), we get a palindrome (232232424232232).

The spelling of 121022212012111 in words is "one hundred twenty-one trillion, twenty-two billion, two hundred twelve million, twelve thousand, one hundred eleven".