121012001219 has 8 divisors (see below), whose sum is σ = 121135461120. Its totient is φ = 120888583816.

The previous prime is 121012001213. The next prime is 121012001237. The reversal of 121012001219 is 912100210121.

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 121012001219 - 2²⁸ = 120743565763 is a prime.

It is a super-2 number, since 2×121012001219² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121012001219.

It is not an unprimeable number, because it can be changed into a prime (121012001213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10838762 + ... + 10849920.

It is an arithmetic number, because the mean of its divisors is an integer number (15141932640).

Almost surely, 2^121012001219 is an apocalyptic number.

121012001219 is a deficient number, since it is larger than the sum of its proper divisors (123459901).

121012001219 is a wasteful number, since it uses less digits than its factorization.

121012001219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21249.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 121012001219 in words is "one hundred twenty-one billion, twelve million, one thousand, two hundred nineteen".