121102020219 has 16 divisors (see below), whose sum is σ = 161703924512. Its totient is φ = 80617483008.

The previous prime is 121102020217. The next prime is 121102020227. The reversal of 121102020219 is 912020201121.

It is not a de Polignac number, because 121102020219 - 2¹ = 121102020217 is a prime.

It is a super-2 number, since 2×121102020219² (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 = 121102020195 and 121102020204.

It is not an unprimeable number, because it can be changed into a prime (121102020217) 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, 6669477 + ... + 6687609.

It is an arithmetic number, because the mean of its divisors is an integer number (10106495282).

Almost surely, 2^121102020219 is an apocalyptic number.

121102020219 is a deficient number, since it is larger than the sum of its proper divisors (40601904293).

121102020219 is a wasteful number, since it uses less digits than its factorization.

121102020219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21246.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 121102020219 in words is "one hundred twenty-one billion, one hundred two million, twenty thousand, two hundred nineteen".