1331201201 has 16 divisors (see below), whose sum is σ = 1539217728. Its totient is φ = 1137830400.

The previous prime is 1331201197. The next prime is 1331201219. The reversal of 1331201201 is 1021021331.

It is not a de Polignac number, because 1331201201 - 2² = 1331201197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1331201701) 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, 214421 + ... + 220541.

It is an arithmetic number, because the mean of its divisors is an integer number (96201108).

Almost surely, 2^1331201201 is an apocalyptic number.

1331201201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1331201201 is a deficient number, since it is larger than the sum of its proper divisors (208016527).

1331201201 is a wasteful number, since it uses less digits than its factorization.

1331201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7312.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1331201201 is about 36485.6300617106. The cubic root of 1331201201 is about 1100.0554244801.

Adding to 1331201201 its reverse (1021021331), we get a palindrome (2352222532).

The spelling of 1331201201 in words is "one billion, three hundred thirty-one million, two hundred one thousand, two hundred one".