122120000001 has 10 divisors (see below), whose sum is σ = 182426172962. Its totient is φ = 81413333280.

The previous prime is 122119999997. The next prime is 122120000003. The reversal of 122120000001 is 100000021221.

It can be written as a sum of positive squares in only one way, i.e., 114277126401 + 7842873600 = 338049^2 + 88560^2 .

It is not a de Polignac number, because 122120000001 - 2² = 122119999997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122120000003) 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, 753827080 + ... + 753827241.

Almost surely, 2^122120000001 is an apocalyptic number.

It is an amenable number.

122120000001 is a deficient number, since it is larger than the sum of its proper divisors (60306172961).

122120000001 is an equidigital number, since it uses as much as digits as its factorization.

122120000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507654333 (or 1507654324 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 122120000001 its reverse (100000021221), we get a palindrome (222120021222).

The spelling of 122120000001 in words is "one hundred twenty-two billion, one hundred twenty million, one", and thus it is an aban number.