122021221112011 has 4 divisors (see below), whose sum is σ = 131407468889872. Its totient is φ = 112634973334152.

The previous prime is 122021221111991. The next prime is 122021221112017. The reversal of 122021221112011 is 110211122120221.

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 122021221112011 - 2³³ = 122012631177419 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 122021221112011.

It is not an unprimeable number, because it can be changed into a prime (122021221112017) 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, 4693123888911 + ... + 4693123888936.

It is an arithmetic number, because the mean of its divisors is an integer number (32851867222468).

Almost surely, 2^{122021221112011} is an apocalyptic number.

122021221112011 is a deficient number, since it is larger than the sum of its proper divisors (9386247777861).

122021221112011 is an equidigital number, since it uses as much as digits as its factorization.

122021221112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9386247777860.

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

Adding to 122021221112011 its reverse (110211122120221), we get a palindrome (232232343232232).

The spelling of 122021221112011 in words is "one hundred twenty-two trillion, twenty-one billion, two hundred twenty-one million, one hundred twelve thousand, eleven".