1200201110221 has 4 divisors (see below), whose sum is σ = 1200319916832. Its totient is φ = 1200082303612.

The previous prime is 1200201110203. The next prime is 1200201110233. The reversal of 1200201110221 is 1220111020021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200201110221 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 (1200201110021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59388151 + ... + 59408356.

It is an arithmetic number, because the mean of its divisors is an integer number (300079979208).

Almost surely, 2^{1200201110221} is an apocalyptic number.

It is an amenable number.

1200201110221 is a deficient number, since it is larger than the sum of its proper divisors (118806611).

1200201110221 is a wasteful number, since it uses less digits than its factorization.

1200201110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118806610.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1200201110221 its reverse (1220111020021), we get a palindrome (2420312130242).

The spelling of 1200201110221 in words is "one trillion, two hundred billion, two hundred one million, one hundred ten thousand, two hundred twenty-one".