121215100246045 has 16 divisors (see below), whose sum is σ = 156652260094512. Its totient is φ = 89509801628160.

The previous prime is 121215100245997. The next prime is 121215100246127. The reversal of 121215100246045 is 540642001512121.

It can be written as a sum of positive squares in 8 ways, for example, as 50639206551129 + 70575893694916 = 7116123^2 + 8400946^2 .

It is not a de Polignac number, because 121215100246045 - 2³⁵ = 121180740507677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121215100246045.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28049736 + ... + 32081425.

It is an arithmetic number, because the mean of its divisors is an integer number (9790766255907).

Almost surely, 2^{121215100246045} is an apocalyptic number.

It is an amenable number.

121215100246045 is a deficient number, since it is larger than the sum of its proper divisors (35437159848467).

121215100246045 is a wasteful number, since it uses less digits than its factorization.

121215100246045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60162192.

The product of its (nonzero) digits is 19200, while the sum is 34.

Adding to 121215100246045 its reverse (540642001512121), we get a palindrome (661857101758166).

The spelling of 121215100246045 in words is "one hundred twenty-one trillion, two hundred fifteen billion, one hundred million, two hundred forty-six thousand, forty-five".