121230131 has 4 divisors (see below), whose sum is σ = 132251064. Its totient is φ = 110209200.

The previous prime is 121230097. The next prime is 121230139. The reversal of 121230131 is 131032121.

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 121230131 - 2¹⁰ = 121229107 is a prime.

It is a super-2 number, since 2×121230131² = 29393489324554322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121230139) 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, 5510450 + ... + 5510471.

It is an arithmetic number, because the mean of its divisors is an integer number (33062766).

Almost surely, 2^121230131 is an apocalyptic number.

121230131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121230131 is a deficient number, since it is larger than the sum of its proper divisors (11020933).

121230131 is a wasteful number, since it uses less digits than its factorization.

121230131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11020932.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 121230131 is about 11010.4555309942. The cubic root of 121230131 is about 494.9221126985.

Adding to 121230131 its reverse (131032121), we get a palindrome (252262252).

The spelling of 121230131 in words is "one hundred twenty-one million, two hundred thirty thousand, one hundred thirty-one".