121022020219 has 16 divisors (see below), whose sum is σ = 126090169920. Its totient is φ = 116016445440.

The previous prime is 121022020199. The next prime is 121022020237. The reversal of 121022020219 is 912020220121.

It is a cyclic number.

It is not a de Polignac number, because 121022020219 - 2²¹ = 121019923067 is a prime.

It is a super-2 number, since 2×121022020219² (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 121022020219.

It is not an unprimeable number, because it can be changed into a prime (121022020289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2329602 + ... + 2380984.

It is an arithmetic number, because the mean of its divisors is an integer number (7880635620).

Almost surely, 2^121022020219 is an apocalyptic number.

121022020219 is a deficient number, since it is larger than the sum of its proper divisors (5068149701).

121022020219 is a wasteful number, since it uses less digits than its factorization.

121022020219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51990.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 121022020219 in words is "one hundred twenty-one billion, twenty-two million, twenty thousand, two hundred nineteen".