12098901221 has 8 divisors (see below), whose sum is σ = 13201941504. Its totient is φ = 10996384320.

The previous prime is 12098901211. The next prime is 12098901259. The reversal of 12098901221 is 12210989021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12098901221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12098901211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81701 + ... + 175706.

It is an arithmetic number, because the mean of its divisors is an integer number (1650242688).

Almost surely, 2^12098901221 is an apocalyptic number.

12098901221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12098901221 is a deficient number, since it is larger than the sum of its proper divisors (1103040283).

12098901221 is a wasteful number, since it uses less digits than its factorization.

12098901221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261691.

The product of its (nonzero) digits is 5184, while the sum is 35.

It can be divided in two parts, 12098 and 901221, that added together give a palindrome (913319).

The spelling of 12098901221 in words is "twelve billion, ninety-eight million, nine hundred one thousand, two hundred twenty-one".