121112313019 has 4 divisors (see below), whose sum is σ = 128236566744. Its totient is φ = 113988059296.

The previous prime is 121112313011. The next prime is 121112313041. The reversal of 121112313019 is 910313211121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121112313019 - 2³ = 121112313011 is a prime.

It is a super-2 number, since 2×121112313019² (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 = 121112312984 and 121112313002.

It is not an unprimeable number, because it can be changed into a prime (121112313011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3562126837 + ... + 3562126870.

It is an arithmetic number, because the mean of its divisors is an integer number (32059141686).

Almost surely, 2^121112313019 is an apocalyptic number.

121112313019 is a deficient number, since it is larger than the sum of its proper divisors (7124253725).

121112313019 is an equidigital number, since it uses as much as digits as its factorization.

121112313019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7124253724.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 121112313019 in words is "one hundred twenty-one billion, one hundred twelve million, three hundred thirteen thousand, nineteen".