122011212101111 has 4 divisors (see below), whose sum is σ = 122018413393632. Its totient is φ = 122004010808592.

The previous prime is 122011212100909. The next prime is 122011212101113. The reversal of 122011212101111 is 111101212110221.

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 122011212101111 - 2³⁴ = 121994032231927 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122011212101111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122011212101113) 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, 3600620846 + ... + 3600654731.

It is an arithmetic number, because the mean of its divisors is an integer number (30504603348408).

Almost surely, 2^{122011212101111} is an apocalyptic number.

122011212101111 is a deficient number, since it is larger than the sum of its proper divisors (7201292521).

122011212101111 is an equidigital number, since it uses as much as digits as its factorization.

122011212101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7201292520.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 122011212101111 its reverse (111101212110221), we get a palindrome (233112424211332).

The spelling of 122011212101111 in words is "one hundred twenty-two trillion, eleven billion, two hundred twelve million, one hundred one thousand, one hundred eleven".