120121004225 has 24 divisors (see below), whose sum is σ = 157940435808. Its totient is φ = 90312940800.

The previous prime is 120121004221. The next prime is 120121004383. The reversal of 120121004225 is 522400121021.

It is not a de Polignac number, because 120121004225 - 2² = 120121004221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120121004197 and 120121004206.

It is not an unprimeable number, because it can be changed into a prime (120121004221) 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, 89162 + ... + 498188.

It is an arithmetic number, because the mean of its divisors is an integer number (6580851492).

Almost surely, 2^120121004225 is an apocalyptic number.

It is an amenable number.

120121004225 is a deficient number, since it is larger than the sum of its proper divisors (37819431583).

120121004225 is a wasteful number, since it uses less digits than its factorization.

120121004225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409745 (or 409740 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 120121004225 its reverse (522400121021), we get a palindrome (642521125246).

The spelling of 120121004225 in words is "one hundred twenty billion, one hundred twenty-one million, four thousand, two hundred twenty-five".