121002125 has 8 divisors (see below), whose sum is σ = 151010808. Its totient is φ = 96801600.

The previous prime is 121002121. The next prime is 121002157. The reversal of 121002125 is 521200121.

It can be written as a sum of positive squares in 4 ways, for example, as 2910436 + 118091689 = 1706^2 + 10867^2 .

It is not a de Polignac number, because 121002125 - 2² = 121002121 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002121) 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, 483884 + ... + 484133.

It is an arithmetic number, because the mean of its divisors is an integer number (18876351).

Almost surely, 2^121002125 is an apocalyptic number.

It is an amenable number.

121002125 is a deficient number, since it is larger than the sum of its proper divisors (30008683).

121002125 is an frugal number, since it uses more digits than its factorization.

121002125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968032 (or 968022 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 121002125 is about 11000.0965904850. The cubic root of 121002125 is about 494.6116397448.

Adding to 121002125 its reverse (521200121), we get a palindrome (642202246).

The spelling of 121002125 in words is "one hundred twenty-one million, two thousand, one hundred twenty-five".