1021244412431 has 4 divisors (see below), whose sum is σ = 1023058346232. Its totient is φ = 1019430478632.

The previous prime is 1021244412407. The next prime is 1021244412479. The reversal of 1021244412431 is 1342144421201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1021244412431 - 2²² = 1021240218127 is a prime.

It is a super-2 number, since 2×1021244412431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021244412394 and 1021244412403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021244412491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 906966056 + ... + 906967181.

It is an arithmetic number, because the mean of its divisors is an integer number (255764586558).

Almost surely, 2^{1021244412431} is an apocalyptic number.

1021244412431 is a deficient number, since it is larger than the sum of its proper divisors (1813933801).

1021244412431 is an equidigital number, since it uses as much as digits as its factorization.

1021244412431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813933800.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 1021244412431 its reverse (1342144421201), we get a palindrome (2363388833632).

The spelling of 1021244412431 in words is "one trillion, twenty-one billion, two hundred forty-four million, four hundred twelve thousand, four hundred thirty-one".