122112202121011 has 16 divisors (see below), whose sum is σ = 131533914307840. Its totient is φ = 112990189183200.

The previous prime is 122112202120927. The next prime is 122112202121029. The reversal of 122112202121011 is 110121202211221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122112202121011 - 2²¹ = 122112200023859 is a prime.

It is a super-2 number, since 2×122112202121011² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 122112202121011.

It is not an unprimeable number, because it can be changed into a prime (122112202121911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16619986 + ... + 22813336.

It is an arithmetic number, because the mean of its divisors is an integer number (8220869644240).

Almost surely, 2^{122112202121011} is an apocalyptic number.

122112202121011 is a deficient number, since it is larger than the sum of its proper divisors (9421712186829).

122112202121011 is a wasteful number, since it uses less digits than its factorization.

122112202121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6217546.

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

Adding to 122112202121011 its reverse (110121202211221), we get a palindrome (232233404332232).

The spelling of 122112202121011 in words is "one hundred twenty-two trillion, one hundred twelve billion, two hundred two million, one hundred twenty-one thousand, eleven".