121422615 has 16 divisors (see below), whose sum is σ = 194712288. Its totient is φ = 64613376.

The previous prime is 121422601. The next prime is 121422617. The reversal of 121422615 is 516224121.

It is not a de Polignac number, because 121422615 - 2⁴ = 121422599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121422617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2002 + ... + 15711.

It is an arithmetic number, because the mean of its divisors is an integer number (12169518).

Almost surely, 2^121422615 is an apocalyptic number.

121422615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121422615 is a deficient number, since it is larger than the sum of its proper divisors (73289673).

121422615 is a wasteful number, since it uses less digits than its factorization.

121422615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18178.

The product of its digits is 960, while the sum is 24.

The square root of 121422615 is about 11019.1930285298. The cubic root of 121422615 is about 495.1839128867.

Adding to 121422615 its reverse (516224121), we get a palindrome (637646736).

The spelling of 121422615 in words is "one hundred twenty-one million, four hundred twenty-two thousand, six hundred fifteen".