1331201101 has 4 divisors (see below), whose sum is σ = 1374143104. Its totient is φ = 1288259100.

The previous prime is 1331201089. The next prime is 1331201111. The reversal of 1331201101 is 1011021331.

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 not a de Polignac number, because 1331201101 - 2²⁹ = 794330189 is a prime.

It is a super-2 number, since 2×1331201101² = 3544192742607224402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331201111) 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, 21470955 + ... + 21471016.

It is an arithmetic number, because the mean of its divisors is an integer number (343535776).

Almost surely, 2^1331201101 is an apocalyptic number.

It is an amenable number.

1331201101 is a deficient number, since it is larger than the sum of its proper divisors (42942003).

1331201101 is an equidigital number, since it uses as much as digits as its factorization.

1331201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42942002.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1331201101 is about 36485.6286913080. The cubic root of 1331201101 is about 1100.0553969346.

Adding to 1331201101 its reverse (1011021331), we get a palindrome (2342222432).

The spelling of 1331201101 in words is "one billion, three hundred thirty-one million, two hundred one thousand, one hundred one".