121255675071513 has 16 divisors (see below), whose sum is σ = 162522128151552. Its totient is φ = 80413176816000.

The previous prime is 121255675071511. The next prime is 121255675071523. The reversal of 121255675071513 is 315170576552121.

It is not a de Polignac number, because 121255675071513 - 2¹ = 121255675071511 is a prime.

It is a super-4 number, since 4×121255675071513⁴ (a number of 57 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (121255675071511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68644803 + ... + 70389063.

It is an arithmetic number, because the mean of its divisors is an integer number (10157633009472).

Almost surely, 2^{121255675071513} is an apocalyptic number.

It is an amenable number.

121255675071513 is a deficient number, since it is larger than the sum of its proper divisors (41266453080039).

121255675071513 is a wasteful number, since it uses less digits than its factorization.

121255675071513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865776.

The product of its (nonzero) digits is 2205000, while the sum is 51.

The spelling of 121255675071513 in words is "one hundred twenty-one trillion, two hundred fifty-five billion, six hundred seventy-five million, seventy-one thousand, five hundred thirteen".