121031113 has 4 divisors (see below), whose sum is σ = 138321280. Its totient is φ = 103740948.

The previous prime is 121031101. The next prime is 121031117. The reversal of 121031113 is 311130121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 311130121 = 15443 ⋅20147.

It is a cyclic number.

It is not a de Polignac number, because 121031113 - 2²⁵ = 87476681 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121031093 and 121031102.

It is not an unprimeable number, because it can be changed into a prime (121031117) 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, 8645073 + ... + 8645086.

It is an arithmetic number, because the mean of its divisors is an integer number (34580320).

Almost surely, 2^121031113 is an apocalyptic number.

It is an amenable number.

121031113 is a deficient number, since it is larger than the sum of its proper divisors (17290167).

121031113 is an equidigital number, since it uses as much as digits as its factorization.

121031113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17290166.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 121031113 is about 11001.4141363736. The cubic root of 121031113 is about 494.6511339752.

Adding to 121031113 its reverse (311130121), we get a palindrome (432161234).

It can be divided in two parts, 1210 and 31113, that added together give a palindrome (32323).

The spelling of 121031113 in words is "one hundred twenty-one million, thirty-one thousand, one hundred thirteen".