121116413 has 16 divisors (see below), whose sum is σ = 138295296. Its totient is φ = 104995440.

The previous prime is 121116409. The next prime is 121116427. The reversal of 121116413 is 314611121.

It is a happy number.

It is not a de Polignac number, because 121116413 - 2² = 121116409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121116493) 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, 122720 + ... + 123702.

It is an arithmetic number, because the mean of its divisors is an integer number (8643456).

Almost surely, 2^121116413 is an apocalyptic number.

It is an amenable number.

121116413 is a deficient number, since it is larger than the sum of its proper divisors (17178883).

121116413 is a wasteful number, since it uses less digits than its factorization.

121116413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504.

The product of its digits is 144, while the sum is 20.

The square root of 121116413 is about 11005.2902278859. The cubic root of 121116413 is about 494.7673130087.

Adding to 121116413 its reverse (314611121), we get a palindrome (435727534).

The spelling of 121116413 in words is "one hundred twenty-one million, one hundred sixteen thousand, four hundred thirteen".