122500021225 has 6 divisors (see below), whose sum is σ = 151900026350. Its totient is φ = 98000016960.

The previous prime is 122500021219. The next prime is 122500021253. The reversal of 122500021225 is 522120005221.

It can be written as a sum of positive squares in 3 ways, for example, as 26813735001 + 95686286224 = 163749^2 + 309332^2 .

It is not a de Polignac number, because 122500021225 - 2²⁹ = 121963150313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122500021196 and 122500021205.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2450000400 + ... + 2450000449.

Almost surely, 2^122500021225 is an apocalyptic number.

It is an amenable number.

122500021225 is a deficient number, since it is larger than the sum of its proper divisors (29400005125).

122500021225 is an equidigital number, since it uses as much as digits as its factorization.

122500021225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4900000859 (or 4900000854 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 122500021225 its reverse (522120005221), we get a palindrome (644620026446).

The spelling of 122500021225 in words is "one hundred twenty-two billion, five hundred million, twenty-one thousand, two hundred twenty-five".