121031303309 has 4 divisors (see below), whose sum is σ = 138321489504. Its totient is φ = 103741117116.

The previous prime is 121031303251. The next prime is 121031303329. The reversal of 121031303309 is 903303130121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 121031303309 - 2²⁴ = 121014526093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121031303329) 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, 8645093087 + ... + 8645093100.

It is an arithmetic number, because the mean of its divisors is an integer number (34580372376).

Almost surely, 2^121031303309 is an apocalyptic number.

It is an amenable number.

121031303309 is a deficient number, since it is larger than the sum of its proper divisors (17290186195).

121031303309 is an equidigital number, since it uses as much as digits as its factorization.

121031303309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17290186194.

The product of its (nonzero) digits is 1458, while the sum is 26.

The spelling of 121031303309 in words is "one hundred twenty-one billion, thirty-one million, three hundred three thousand, three hundred nine".