121075531 has 4 divisors (see below), whose sum is σ = 121959432. Its totient is φ = 120191632.

The previous prime is 121075523. The next prime is 121075541. The reversal of 121075531 is 135570121.

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 121075531 - 2³ = 121075523 is a prime.

It is a super-2 number, since 2×121075531² = 29318568413863922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121075496 and 121075505.

It is not an unprimeable number, because it can be changed into a prime (121075541) 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, 441745 + ... + 442018.

It is an arithmetic number, because the mean of its divisors is an integer number (30489858).

Almost surely, 2^121075531 is an apocalyptic number.

121075531 is a deficient number, since it is larger than the sum of its proper divisors (883901).

121075531 is an equidigital number, since it uses as much as digits as its factorization.

121075531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883900.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 121075531 is about 11003.4326916649. The cubic root of 121075531 is about 494.7116383261.

The spelling of 121075531 in words is "one hundred twenty-one million, seventy-five thousand, five hundred thirty-one".