1013321421444 has 48 divisors (see below), whose sum is σ = 2395833995520. Its totient is φ = 333290929920.

The previous prime is 1013321421403. The next prime is 1013321421451. The reversal of 1013321421444 is 4441241233101.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1197784 + ... + 1860464.

It is an arithmetic number, because the mean of its divisors is an integer number (49913208240).

Almost surely, 2^{1013321421444} is an apocalyptic number.

It is an amenable number.

1013321421444 is an abundant number, since it is smaller than the sum of its proper divisors (1382512574076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1013321421444 is a wasteful number, since it uses less digits than its factorization.

1013321421444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664380 (or 664378 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 1013321421444 its reverse (4441241233101), we get a palindrome (5454562654545).

The spelling of 1013321421444 in words is "one trillion, thirteen billion, three hundred twenty-one million, four hundred twenty-one thousand, four hundred forty-four".