1012822844881 has 3 divisors (see below), whose sum is σ = 1012823851273. Its totient is φ = 1012821838490.

The previous prime is 1012822844843. The next prime is 1012822844903. The reversal of 1012822844881 is 1884482282101.

The square root of 1012822844881 is 1006391.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1012822844881 - 2¹¹ = 1012822842833 is a prime.

It is a super-2 number, since 2×1012822844881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012822844281) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 503196 + ... + 1509586.

Almost surely, 2^{1012822844881} is an apocalyptic number.

1012822844881 is the 1006391-st square number.

1012822844881 is the 503196-th centered octagonal number.

It is an amenable number.

1012822844881 is a deficient number, since it is larger than the sum of its proper divisors (1006392).

1012822844881 is an frugal number, since it uses more digits than its factorization.

1012822844881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012782 (or 1006391 counting only the distinct ones).

The product of its (nonzero) digits is 524288, while the sum is 49.

Multiplying 1012822844881 by its sum of digits (49), we get a square (49628319399169 = 7044737²).

The spelling of 1012822844881 in words is "one trillion, twelve billion, eight hundred twenty-two million, eight hundred forty-four thousand, eight hundred eighty-one".