1031221434004 has 24 divisors (see below), whose sum is σ = 1899694297760. Its totient is φ = 488453802336.

The previous prime is 1031221433993. The next prime is 1031221434007. The reversal of 1031221434004 is 4004341221301.

It is a super-2 number, since 2×1031221434004² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1031221434004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031221434007) 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, 1742299 + ... + 2257885.

Almost surely, 2^{1031221434004} is an apocalyptic number.

It is an amenable number.

1031221434004 is a deficient number, since it is larger than the sum of its proper divisors (868472863756).

1031221434004 is a wasteful number, since it uses less digits than its factorization.

1031221434004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541927 (or 541925 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1031221434004 its reverse (4004341221301), we get a palindrome (5035562655305).

The spelling of 1031221434004 in words is "one trillion, thirty-one billion, two hundred twenty-one million, four hundred thirty-four thousand, four".