1201200021209 has 8 divisors (see below), whose sum is σ = 1271868998400. Its totient is φ = 1130532172096.

The previous prime is 1201200021191. The next prime is 1201200021221. The reversal of 1201200021209 is 9021200021021.

It is a happy number.

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 1201200021209 - 2²⁴ = 1201183243993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201200021239) 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, 3004892 + ... + 3381090.

It is an arithmetic number, because the mean of its divisors is an integer number (158983624800).

Almost surely, 2^{1201200021209} is an apocalyptic number.

It is an amenable number.

1201200021209 is a deficient number, since it is larger than the sum of its proper divisors (70668977191).

1201200021209 is a wasteful number, since it uses less digits than its factorization.

1201200021209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564039.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 1201200021209 in words is "one trillion, two hundred one billion, two hundred million, twenty-one thousand, two hundred nine".