121201016519 has 8 divisors (see below), whose sum is σ = 132253093008. Its totient is φ = 110154573760.

The previous prime is 121201016477. The next prime is 121201016579. The reversal of 121201016519 is 915610102121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121201016519 - 2⁸ = 121201016263 is a prime.

It is a super-2 number, since 2×121201016519² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121201016491 and 121201016500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201016579) 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 7 ways as a sum of consecutive naturals, for example, 1363382 + ... + 1449555.

It is an arithmetic number, because the mean of its divisors is an integer number (16531636626).

Almost surely, 2^121201016519 is an apocalyptic number.

121201016519 is a deficient number, since it is larger than the sum of its proper divisors (11052076489).

121201016519 is a wasteful number, since it uses less digits than its factorization.

121201016519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2816865.

The product of its (nonzero) digits is 1080, while the sum is 29.

The spelling of 121201016519 in words is "one hundred twenty-one billion, two hundred one million, sixteen thousand, five hundred nineteen".