121195131 has 4 divisors (see below), whose sum is σ = 161593512. Its totient is φ = 80796752.

The previous prime is 121195121. The next prime is 121195141. The reversal of 121195131 is 131591121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131591121 = 3 ⋅43863707.

It is an interprime number because it is at equal distance from previous prime (121195121) and next prime (121195141).

It is a cyclic number.

It is not a de Polignac number, because 121195131 - 2¹⁷ = 121064059 is a prime.

It is a super-2 number, since 2×121195131² = 29376519556214322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121195121) 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, 20199186 + ... + 20199191.

It is an arithmetic number, because the mean of its divisors is an integer number (40398378).

Almost surely, 2^121195131 is an apocalyptic number.

121195131 is a deficient number, since it is larger than the sum of its proper divisors (40398381).

121195131 is an equidigital number, since it uses as much as digits as its factorization.

121195131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40398380.

The product of its digits is 270, while the sum is 24.

The square root of 121195131 is about 11008.8660178967. The cubic root of 121195131 is about 494.8744789375.

The spelling of 121195131 in words is "one hundred twenty-one million, one hundred ninety-five thousand, one hundred thirty-one".