122020100109 has 10 divisors (see below), whose sum is σ = 182276939790. Its totient is φ = 81346733352.

The previous prime is 122020100057. The next prime is 122020100117. The reversal of 122020100109 is 901001020221.

It can be written as a sum of positive squares in only one way, i.e., 121250204100 + 769896009 = 348210^2 + 27747^2 .

It is not a de Polignac number, because 122020100109 - 2⁸ = 122020099853 is a prime.

It is a super-3 number, since 3×122020100109³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 122020100091 and 122020100100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122020100159) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 753210414 + ... + 753210575.

It is an arithmetic number, because the mean of its divisors is an integer number (18227693979).

Almost surely, 2^122020100109 is an apocalyptic number.

It is an amenable number.

122020100109 is a deficient number, since it is larger than the sum of its proper divisors (60256839681).

122020100109 is an equidigital number, since it uses as much as digits as its factorization.

122020100109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506421001 (or 1506420992 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 122020100109 in words is "one hundred twenty-two billion, twenty million, one hundred thousand, one hundred nine".