1201103116621 has 32 divisors (see below), whose sum is σ = 1271587000320. Its totient is φ = 1132903800000.

The previous prime is 1201103116597. The next prime is 1201103116657. The reversal of 1201103116621 is 1266113011021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201103116621 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 (1201103116021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186185446 + ... + 186191896.

It is an arithmetic number, because the mean of its divisors is an integer number (39737093760).

Almost surely, 2^{1201103116621} is an apocalyptic number.

It is an amenable number.

1201103116621 is a deficient number, since it is larger than the sum of its proper divisors (70483883699).

1201103116621 is a wasteful number, since it uses less digits than its factorization.

1201103116621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7417.

The product of its (nonzero) digits is 432, while the sum is 25.

Adding to 1201103116621 its reverse (1266113011021), we get a palindrome (2467216127642).

The spelling of 1201103116621 in words is "one trillion, two hundred one billion, one hundred three million, one hundred sixteen thousand, six hundred twenty-one".