1021244412394 has 16 divisors (see below), whose sum is σ = 1564887949920. Its totient is φ = 499665937680.

The previous prime is 1021244412389. The next prime is 1021244412403. The reversal of 1021244412394 is 4932144421201.

It is a super-2 number, since 2×1021244412394² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12670092 + ... + 12750439.

It is an arithmetic number, because the mean of its divisors is an integer number (97805496870).

Almost surely, 2^{1021244412394} is an apocalyptic number.

1021244412394 is a deficient number, since it is larger than the sum of its proper divisors (543643537526).

1021244412394 is a wasteful number, since it uses less digits than its factorization.

1021244412394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25420965.

The product of its (nonzero) digits is 55296, while the sum is 37.

Adding to 1021244412394 its reverse (4932144421201), we get a palindrome (5953388833595).

The spelling of 1021244412394 in words is "one trillion, twenty-one billion, two hundred forty-four million, four hundred twelve thousand, three hundred ninety-four".