1021412831672 has 32 divisors (see below), whose sum is σ = 2016018249600. Its totient is φ = 483809881824.

The previous prime is 1021412831657. The next prime is 1021412831689. The reversal of 1021412831672 is 2761382141201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4827773 + ... + 5034899.

It is an arithmetic number, because the mean of its divisors is an integer number (63000570300).

Almost surely, 2^{1021412831672} is an apocalyptic number.

It is an amenable number.

1021412831672 is a deficient number, since it is larger than the sum of its proper divisors (994605417928).

1021412831672 is a wasteful number, since it uses less digits than its factorization.

1021412831672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239595 (or 239591 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

Adding to 1021412831672 its reverse (2761382141201), we get a palindrome (3782794972873).

The spelling of 1021412831672 in words is "one trillion, twenty-one billion, four hundred twelve million, eight hundred thirty-one thousand, six hundred seventy-two".