121612723 has 2 divisors, whose sum is σ = 121612724. Its totient is φ = 121612722.

The previous prime is 121612703. The next prime is 121612739. The reversal of 121612723 is 327216121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121612723 - 2⁵ = 121612691 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (121612703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60806361 + 60806362.

It is an arithmetic number, because the mean of its divisors is an integer number (60806362).

Almost surely, 2^121612723 is an apocalyptic number.

121612723 is a deficient number, since it is larger than the sum of its proper divisors (1).

121612723 is an equidigital number, since it uses as much as digits as its factorization.

121612723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 121612723 is about 11027.8158762286. The cubic root of 121612723 is about 495.4422100088.

Adding to 121612723 its reverse (327216121), we get a palindrome (448828844).

It can be divided in two parts, 12161 and 2723, that added together give a square (14884 = 122²).

The spelling of 121612723 in words is "one hundred twenty-one million, six hundred twelve thousand, seven hundred twenty-three".