121102045 has 8 divisors (see below), whose sum is σ = 145515096. Its totient is φ = 96753216.

The previous prime is 121102039. The next prime is 121102049. The reversal of 121102045 is 540201121.

It can be written as a sum of positive squares in 4 ways, for example, as 21780889 + 99321156 = 4667^2 + 9966^2 .

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 121102045 - 2⁵ = 121102013 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 (121102049) 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, 11802 + ... + 19531.

It is an arithmetic number, because the mean of its divisors is an integer number (18189387).

Almost surely, 2^121102045 is an apocalyptic number.

It is an amenable number.

121102045 is a deficient number, since it is larger than the sum of its proper divisors (24413051).

121102045 is an equidigital number, since it uses as much as digits as its factorization.

121102045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32111.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 121102045 is about 11004.6374315558. The cubic root of 121102045 is about 494.7477475408.

Adding to 121102045 its reverse (540201121), we get a palindrome (661303166).

The spelling of 121102045 in words is "one hundred twenty-one million, one hundred two thousand, forty-five".