121100231 has 8 divisors (see below), whose sum is σ = 146541600. Its totient is φ = 97694208.

The previous prime is 121100219. The next prime is 121100233. The reversal of 121100231 is 132001121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121100231 is a prime.

It is a super-2 number, since 2×121100231² = 29330531896506722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508706 + ... + 508943.

It is an arithmetic number, because the mean of its divisors is an integer number (18317700).

Almost surely, 2^121100231 is an apocalyptic number.

121100231 is a deficient number, since it is larger than the sum of its proper divisors (25441369).

121100231 is a wasteful number, since it uses less digits than its factorization.

121100231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017673.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 121100231 is about 11004.5550114487. Note that the first 3 decimals coincide. The cubic root of 121100231 is about 494.7452772360.

Adding to 121100231 its reverse (132001121), we get a palindrome (253101352).

The spelling of 121100231 in words is "one hundred twenty-one million, one hundred thousand, two hundred thirty-one".