122201121021 has 24 divisors (see below), whose sum is σ = 190142051904. Its totient is φ = 69606089280.

The previous prime is 122201121017. The next prime is 122201121047. The reversal of 122201121021 is 120121102221.

It is not a de Polignac number, because 122201121021 - 2² = 122201121017 is a prime.

It is a super-2 number, since 2×122201121021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122201101021) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1281945 + ... + 1373966.

It is an arithmetic number, because the mean of its divisors is an integer number (7922585496).

Almost surely, 2^122201121021 is an apocalyptic number.

It is an amenable number.

122201121021 is a deficient number, since it is larger than the sum of its proper divisors (67940930883).

122201121021 is a wasteful number, since it uses less digits than its factorization.

122201121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656241 (or 2656234 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 122201121021 its reverse (120121102221), we get a palindrome (242322223242).

The spelling of 122201121021 in words is "one hundred twenty-two billion, two hundred one million, one hundred twenty-one thousand, twenty-one".