1082998722421 has 48 divisors (see below), whose sum is σ = 1426481117568. Its totient is φ = 798669590400.

The previous prime is 1082998722397. The next prime is 1082998722431. The reversal of 1082998722421 is 1242278992801.

It is not a de Polignac number, because 1082998722421 - 2¹¹ = 1082998720373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1082998722431) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28139131 + ... + 28177591.

It is an arithmetic number, because the mean of its divisors is an integer number (29718356616).

Almost surely, 2^{1082998722421} is an apocalyptic number.

1082998722421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1082998722421 is a deficient number, since it is larger than the sum of its proper divisors (343482395147).

1082998722421 is a wasteful number, since it uses less digits than its factorization.

1082998722421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39530 (or 39511 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 1082998722421 in words is "one trillion, eighty-two billion, nine hundred ninety-eight million, seven hundred twenty-two thousand, four hundred twenty-one".