121021010219 has 8 divisors (see below), whose sum is σ = 126640543392. Its totient is φ = 115431289600.

The previous prime is 121021010203. The next prime is 121021010233. The reversal of 121021010219 is 912010120121.

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 121021010219 - 2⁴ = 121021010203 is a prime.

It is a super-2 number, since 2×121021010219² (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 121021010219.

It is not an unprimeable number, because it can be changed into a prime (121021010239) 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, 7444832 + ... + 7461069.

It is an arithmetic number, because the mean of its divisors is an integer number (15830067924).

Almost surely, 2^121021010219 is an apocalyptic number.

121021010219 is a deficient number, since it is larger than the sum of its proper divisors (5619533173).

121021010219 is a wasteful number, since it uses less digits than its factorization.

121021010219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14906277.

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

The spelling of 121021010219 in words is "one hundred twenty-one billion, twenty-one million, ten thousand, two hundred nineteen".