122122011121221 has 16 divisors (see below), whose sum is σ = 174835820400768. Its totient is φ = 75546342144000.

The previous prime is 122122011121213. The next prime is 122122011121267. The reversal of 122122011121221 is 122121110221221.

It is not a de Polignac number, because 122122011121221 - 2³ = 122122011121213 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122122011121291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16863019180 + ... + 16863026421.

It is an arithmetic number, because the mean of its divisors is an integer number (10927238775048).

Almost surely, 2^{122122011121221} is an apocalyptic number.

It is an amenable number.

122122011121221 is a deficient number, since it is larger than the sum of its proper divisors (52713809279547).

122122011121221 is a wasteful number, since it uses less digits than its factorization.

122122011121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33726045692.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 122122011121221 its reverse (122121110221221), we get a palindrome (244243121342442).

The spelling of 122122011121221 in words is "one hundred twenty-two trillion, one hundred twenty-two billion, eleven million, one hundred twenty-one thousand, two hundred twenty-one".