1431221011005 has 16 divisors (see below), whose sum is σ = 2290576483584. Its totient is φ = 763110250560.

The previous prime is 1431221011001. The next prime is 1431221011013. The reversal of 1431221011005 is 5001101221341.

It is not a de Polignac number, because 1431221011005 - 2² = 1431221011001 is a prime.

It is a super-2 number, since 2×1431221011005² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431221011001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12919381 + ... + 13029690.

It is an arithmetic number, because the mean of its divisors is an integer number (143161030224).

Almost surely, 2^{1431221011005} is an apocalyptic number.

1431221011005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1431221011005 is a deficient number, since it is larger than the sum of its proper divisors (859355472579).

1431221011005 is a wasteful number, since it uses less digits than its factorization.

1431221011005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25952756.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 1431221011005 its reverse (5001101221341), we get a palindrome (6432322232346).

The spelling of 1431221011005 in words is "one trillion, four hundred thirty-one billion, two hundred twenty-one million, eleven thousand, five".