1201221201099 has 8 divisors (see below), whose sum is σ = 1601693082000. Its totient is φ = 800781727136.

The previous prime is 1201221201097. The next prime is 1201221201107. The reversal of 1201221201099 is 9901021221021.

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

It is a cyclic number.

It is not a de Polignac number, because 1201221201099 - 2¹ = 1201221201097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201221201097) 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, 8015112 + ... + 8163605.

It is an arithmetic number, because the mean of its divisors is an integer number (200211635250).

Almost surely, 2^{1201221201099} is an apocalyptic number.

1201221201099 is a deficient number, since it is larger than the sum of its proper divisors (400471880901).

1201221201099 is a wasteful number, since it uses less digits than its factorization.

1201221201099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16203469.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 1201221201099 in words is "one trillion, two hundred one billion, two hundred twenty-one million, two hundred one thousand, ninety-nine".