121611427 has 8 divisors (see below), whose sum is σ = 140942592. Its totient is φ = 102769800.

The previous prime is 121611407. The next prime is 121611431. The reversal of 121611427 is 724116121.

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

It is a de Polignac number, because none of the positive numbers 2^k-121611427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121611407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121849 + ... + 122842.

It is an arithmetic number, because the mean of its divisors is an integer number (17617824).

Almost surely, 2^121611427 is an apocalyptic number.

121611427 is a deficient number, since it is larger than the sum of its proper divisors (19331165).

121611427 is an equidigital number, since it uses as much as digits as its factorization.

121611427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244769.

The product of its digits is 672, while the sum is 25.

The square root of 121611427 is about 11027.7571155698. The cubic root of 121611427 is about 495.4404500631.

Adding to 121611427 its reverse (724116121), we get a palindrome (845727548).

The spelling of 121611427 in words is "one hundred twenty-one million, six hundred eleven thousand, four hundred twenty-seven".