1331022201 has 16 divisors (see below), whose sum is σ = 1849875264. Its totient is φ = 850474944.

The previous prime is 1331022163. The next prime is 1331022221. The reversal of 1331022201 is 1022201331.

It is a de Polignac number, because none of the positive numbers 2^k-1331022201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1331022221) 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, 82050 + ... + 96923.

It is an arithmetic number, because the mean of its divisors is an integer number (115617204).

Almost surely, 2^1331022201 is an apocalyptic number.

It is an amenable number.

1331022201 is a deficient number, since it is larger than the sum of its proper divisors (518853063).

1331022201 is a wasteful number, since it uses less digits than its factorization.

1331022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179080.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1331022201 is about 36483.1769587025. The cubic root of 1331022201 is about 1100.0061159440.

Adding to 1331022201 its reverse (1022201331), we get a palindrome (2353223532).

It can be divided in two parts, 13310 and 22201, that added together give a triangular number (35511 = T₂₆₆).

The spelling of 1331022201 in words is "one billion, three hundred thirty-one million, twenty-two thousand, two hundred one".