1200201101 has 32 divisors (see below), whose sum is σ = 1407590400. Its totient is φ = 1011890880.

The previous prime is 1200201097. The next prime is 1200201113. The reversal of 1200201101 is 1011020021.

It is not a de Polignac number, because 1200201101 - 2² = 1200201097 is a prime.

It is a super-2 number, since 2×1200201101² = 2880965365683224402, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200201161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2591996 + ... + 2592458.

It is an arithmetic number, because the mean of its divisors is an integer number (43987200).

Almost surely, 2^1200201101 is an apocalyptic number.

1200201101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200201101 is a deficient number, since it is larger than the sum of its proper divisors (207389299).

1200201101 is a wasteful number, since it uses less digits than its factorization.

1200201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1200201101 is about 34643.9186726906. The cubic root of 1200201101 is about 1062.7179274505.

Adding to 1200201101 its reverse (1011020021), we get a palindrome (2211221122).

It can be divided in two parts, 120020 and 1101, that added together give a palindrome (121121).

The spelling of 1200201101 in words is "one billion, two hundred million, two hundred one thousand, one hundred one".