1201171516 has 24 divisors (see below), whose sum is σ = 2236275216. Its totient is φ = 562571520.

The previous prime is 1201171471. The next prime is 1201171529. The reversal of 1201171516 is 6151711021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27511 + ... + 56206.

It is an arithmetic number, because the mean of its divisors is an integer number (93178134).

Almost surely, 2^1201171516 is an apocalyptic number.

It is an amenable number.

1201171516 is a deficient number, since it is larger than the sum of its proper divisors (1035103700).

1201171516 is a wasteful number, since it uses less digits than its factorization.

1201171516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83949 (or 83947 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 25.

The square root of 1201171516 is about 34657.9214033387. The cubic root of 1201171516 is about 1063.0042682415.

Adding to 1201171516 its reverse (6151711021), we get a palindrome (7352882537).

The spelling of 1201171516 in words is "one billion, two hundred one million, one hundred seventy-one thousand, five hundred sixteen".