122111020404 has 36 divisors (see below), whose sum is σ = 311725666980. Its totient is φ = 40300665600.

The previous prime is 122111020397. The next prime is 122111020459. The reversal of 122111020404 is 404020111221.

It can be written as a sum of positive squares in 2 ways, for example, as 62726204304 + 59384816100 = 250452^2 + 243690^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×122111020404² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16788309 + ... + 16795580.

It is an arithmetic number, because the mean of its divisors is an integer number (8659046305).

Almost surely, 2^122111020404 is an apocalyptic number.

It is an amenable number.

122111020404 is an abundant number, since it is smaller than the sum of its proper divisors (189614646576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122111020404 is a wasteful number, since it uses less digits than its factorization.

122111020404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33584000 (or 33583995 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 122111020404 its reverse (404020111221), we get a palindrome (526131131625).

The spelling of 122111020404 in words is "one hundred twenty-two billion, one hundred eleven million, twenty thousand, four hundred four".