121202613 has 24 divisors (see below), whose sum is σ = 204342528. Its totient is φ = 67783392.

The previous prime is 121202597. The next prime is 121202623. The reversal of 121202613 is 316202121.

It is not a de Polignac number, because 121202613 - 2⁴ = 121202597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121202623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17506 + ... + 23427.

It is an arithmetic number, because the mean of its divisors is an integer number (8514272).

Almost surely, 2^121202613 is an apocalyptic number.

It is an amenable number.

121202613 is a deficient number, since it is larger than the sum of its proper divisors (83139915).

121202613 is a wasteful number, since it uses less digits than its factorization.

121202613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40993 (or 40990 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 121202613 is about 11009.2058296682. The cubic root of 121202613 is about 494.8846624453.

Adding to 121202613 its reverse (316202121), we get a palindrome (437404734).

The spelling of 121202613 in words is "one hundred twenty-one million, two hundred two thousand, six hundred thirteen".