121066531 has 4 divisors (see below), whose sum is σ = 121244472. Its totient is φ = 120888592.

The previous prime is 121066529. The next prime is 121066577. The reversal of 121066531 is 135660121.

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 121066531 - 2¹ = 121066529 is a prime.

It is a super-2 number, since 2×121066531² = 29314209856747922, 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 = 121066496 and 121066505.

It is not an unprimeable number, because it can be changed into a prime (121066511) 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, 87946 + ... + 89311.

It is an arithmetic number, because the mean of its divisors is an integer number (30311118).

Almost surely, 2^121066531 is an apocalyptic number.

121066531 is a deficient number, since it is larger than the sum of its proper divisors (177941).

121066531 is an equidigital number, since it uses as much as digits as its factorization.

121066531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177940.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 121066531 is about 11003.0237207778. The cubic root of 121066531 is about 494.6993800963.

The spelling of 121066531 in words is "one hundred twenty-one million, sixty-six thousand, five hundred thirty-one".