1031021213312 has 32 divisors (see below), whose sum is σ = 2054124649920. Its totient is φ = 515476203264.

The previous prime is 1031021213309. The next prime is 1031021213333. The reversal of 1031021213312 is 2133121201301.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1713593 + ... + 2235719.

It is an arithmetic number, because the mean of its divisors is an integer number (64191395310).

Almost surely, 2^{1031021213312} is an apocalyptic number.

It is an amenable number.

1031021213312 is a deficient number, since it is larger than the sum of its proper divisors (1023103436608).

1031021213312 is an equidigital number, since it uses as much as digits as its factorization.

1031021213312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537568 (or 537556 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1031021213312 its reverse (2133121201301), we get a palindrome (3164142414613).

The spelling of 1031021213312 in words is "one trillion, thirty-one billion, twenty-one million, two hundred thirteen thousand, three hundred twelve".