1200202221101 has 16 divisors (see below), whose sum is σ = 1368622395504. Its totient is φ = 1042659323904.

The previous prime is 1200202221091. The next prime is 1200202221103. The reversal of 1200202221101 is 1011222020021.

It can be written as a sum of positive squares in 8 ways, for example, as 196338496201 + 1003863724900 = 443101^2 + 1001930^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200202221101 - 2¹⁸ = 1200201958957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200202221103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4896401 + ... + 5135673.

It is an arithmetic number, because the mean of its divisors is an integer number (85538899719).

Almost surely, 2^{1200202221101} is an apocalyptic number.

It is an amenable number.

1200202221101 is a deficient number, since it is larger than the sum of its proper divisors (168420174403).

1200202221101 is a wasteful number, since it uses less digits than its factorization.

1200202221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262000.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1200202221101 its reverse (1011222020021), we get a palindrome (2211424241122).

The spelling of 1200202221101 in words is "one trillion, two hundred billion, two hundred two million, two hundred twenty-one thousand, one hundred one".