122500000001 has 8 divisors (see below), whose sum is σ = 129780414504. Its totient is φ = 115227866880.

The previous prime is 122499999997. The next prime is 122500000027. The reversal of 122500000001 is 100000005221.

It is a Cunningham number, because it is equal to 350000²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 140659600 + 122359340401 = 11860^2 + 349799^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122500000001 - 2² = 122499999997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122500000901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2039870 + ... + 2099063.

It is an arithmetic number, because the mean of its divisors is an integer number (16222551813).

Almost surely, 2^122500000001 is an apocalyptic number.

It is an amenable number.

122500000001 is a deficient number, since it is larger than the sum of its proper divisors (7280414503).

122500000001 is a wasteful number, since it uses less digits than its factorization.

122500000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4140691.

The product of its (nonzero) digits is 20, while the sum is 11.

Adding to 122500000001 its reverse (100000005221), we get a palindrome (222500005222).

The spelling of 122500000001 in words is "one hundred twenty-two billion, five hundred million, one", and thus it is an aban number.