1231012213330 has 16 divisors (see below), whose sum is σ = 2269866423384. Its totient is φ = 480395009920.

The previous prime is 1231012213313. The next prime is 1231012213331. The reversal of 1231012213330 is 333122101321.

It can be written as a sum of positive squares in 4 ways, for example, as 889443268609 + 341568944721 = 943103^2 + 584439^2 .

It is not an unprimeable number, because it can be changed into a prime (1231012213331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1501233997 + ... + 1501234816.

Almost surely, 2^{1231012213330} is an apocalyptic number.

1231012213330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231012213330 is a deficient number, since it is larger than the sum of its proper divisors (1038854210054).

1231012213330 is a wasteful number, since it uses less digits than its factorization.

1231012213330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3002468861.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1231012213330 its reverse (333122101321), we get a palindrome (1564134314651).

The spelling of 1231012213330 in words is "one trillion, two hundred thirty-one billion, twelve million, two hundred thirteen thousand, three hundred thirty".