1331201012 has 6 divisors (see below), whose sum is σ = 2329601778. Its totient is φ = 665600504.

The previous prime is 1331200999. The next prime is 1331201021. The reversal of 1331201012 is 2101021331.

It can be written as a sum of positive squares in only one way, i.e., 1209231076 + 121969936 = 34774^2 + 11044^2 .

It is a super-2 number, since 2×1331201012² = 3544192268699648288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166400123 + ... + 166400130.

It is an arithmetic number, because the mean of its divisors is an integer number (388266963).

Almost surely, 2^1331201012 is an apocalyptic number.

It is an amenable number.

1331201012 is a deficient number, since it is larger than the sum of its proper divisors (998400766).

1331201012 is a wasteful number, since it uses less digits than its factorization.

1331201012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332800257 (or 332800255 counting only the distinct ones).

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

The square root of 1331201012 is about 36485.6274716497. The cubic root of 1331201012 is about 1100.0553724192.

Adding to 1331201012 its reverse (2101021331), we get a palindrome (3432222343).

The spelling of 1331201012 in words is "one billion, three hundred thirty-one million, two hundred one thousand, twelve".