121300531 has 4 divisors (see below), whose sum is σ = 132327864. Its totient is φ = 110273200.

The previous prime is 121300511. The next prime is 121300547. The reversal of 121300531 is 135003121.

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 121300531 - 2⁹ = 121300019 is a prime.

It is a super-2 number, since 2×121300531² = 29427637641763922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121300511) 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, 5513650 + ... + 5513671.

It is an arithmetic number, because the mean of its divisors is an integer number (33081966).

Almost surely, 2^121300531 is an apocalyptic number.

121300531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121300531 is a deficient number, since it is larger than the sum of its proper divisors (11027333).

121300531 is a wasteful number, since it uses less digits than its factorization.

121300531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11027332.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 121300531 is about 11013.6520282784. The cubic root of 121300531 is about 495.0178968464.

Adding to 121300531 its reverse (135003121), we get a palindrome (256303652).

The spelling of 121300531 in words is "one hundred twenty-one million, three hundred thousand, five hundred thirty-one".