1200221011101 has 24 divisors (see below), whose sum is σ = 1878041355264. Its totient is φ = 679771182720.

The previous prime is 1200221011061. The next prime is 1200221011103. The reversal of 1200221011101 is 1011101220021.

It is not a de Polignac number, because 1200221011101 - 2²⁶ = 1200153902237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200221011103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36110685 + ... + 36143906.

It is an arithmetic number, because the mean of its divisors is an integer number (78251723136).

Almost surely, 2^{1200221011101} is an apocalyptic number.

It is an amenable number.

1200221011101 is a deficient number, since it is larger than the sum of its proper divisors (677820344163).

1200221011101 is a wasteful number, since it uses less digits than its factorization.

1200221011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72254721 (or 72254714 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1200221011101 its reverse (1011101220021), we get a palindrome (2211322231122).

The spelling of 1200221011101 in words is "one trillion, two hundred billion, two hundred twenty-one million, eleven thousand, one hundred one".