121323353019 has 24 divisors (see below), whose sum is σ = 183542962176. Its totient is φ = 71157385200.

The previous prime is 121323353009. The next prime is 121323353029. The reversal of 121323353019 is 910353323121.

It is an interprime number because it is at equal distance from previous prime (121323353009) and next prime (121323353029).

It is not a de Polignac number, because 121323353019 - 2²⁰ = 121322304443 is a prime.

It is a super-2 number, since 2×121323353019² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (121323353009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5379459 + ... + 5401964.

It is an arithmetic number, because the mean of its divisors is an integer number (7647623424).

Almost surely, 2^121323353019 is an apocalyptic number.

121323353019 is a deficient number, since it is larger than the sum of its proper divisors (62219609157).

121323353019 is a wasteful number, since it uses less digits than its factorization.

121323353019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10781479 (or 10781468 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 33.

The spelling of 121323353019 in words is "one hundred twenty-one billion, three hundred twenty-three million, three hundred fifty-three thousand, nineteen".