1021432320244 has 36 divisors (see below), whose sum is σ = 2201658747876. Its totient is φ = 412006312704.

The previous prime is 1021432320241. The next prime is 1021432320253. The reversal of 1021432320244 is 4420232341201.

1021432320244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 709132410000 + 312299910244 = 842100^2 + 558838^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021432320241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153272827 + ... + 153279490.

It is an arithmetic number, because the mean of its divisors is an integer number (61157187441).

Almost surely, 2^{1021432320244} is an apocalyptic number.

1021432320244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1021432320244 is an abundant number, since it is smaller than the sum of its proper divisors (1180226427632).

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

1021432320244 is a wasteful number, since it uses less digits than its factorization.

1021432320244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306552352 (or 306552343 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1021432320244 its reverse (4420232341201), we get a palindrome (5441664661445).

The spelling of 1021432320244 in words is "one trillion, twenty-one billion, four hundred thirty-two million, three hundred twenty thousand, two hundred forty-four".