1200201100011 has 24 divisors (see below), whose sum is σ = 1819492758720. Its totient is φ = 790493883912.

The previous prime is 1200201099967. The next prime is 1200201100097. The reversal of 1200201100011 is 1100011020021.

It is a happy number.

It is not a de Polignac number, because 1200201100011 - 2⁶ = 1200201099947 is a prime.

It is a super-2 number, since 2×1200201100011² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1200201099966 and 1200201100002.

It is not an unprimeable number, because it can be changed into a prime (1200201107011) 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, 29733441 + ... + 29773778.

It is an arithmetic number, because the mean of its divisors is an integer number (75812198280).

Almost surely, 2^{1200201100011} is an apocalyptic number.

1200201100011 is a deficient number, since it is larger than the sum of its proper divisors (619291658709).

1200201100011 is an frugal number, since it uses more digits than its factorization.

1200201100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59507317 (or 59507305 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1200201100011 its reverse (1100011020021), we get a palindrome (2300212120032).

The spelling of 1200201100011 in words is "one trillion, two hundred billion, two hundred one million, one hundred thousand, eleven".