1021440022450 has 12 divisors (see below), whose sum is σ = 1899878441850. Its totient is φ = 408576008960.

The previous prime is 1021440022403. The next prime is 1021440022469. The reversal of 1021440022450 is 542200441201.

It can be written as a sum of positive squares in 3 ways, for example, as 545327602369 + 476112420081 = 738463^2 + 690009^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

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 5 ways as a sum of consecutive naturals, for example, 10214400175 + ... + 10214400274.

Almost surely, 2^{1021440022450} is an apocalyptic number.

1021440022450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021440022450 is a deficient number, since it is larger than the sum of its proper divisors (878438419400).

1021440022450 is a wasteful number, since it uses less digits than its factorization.

1021440022450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20428800461 (or 20428800456 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 1021440022450 its reverse (542200441201), we get a palindrome (1563640463651).

The spelling of 1021440022450 in words is "one trillion, twenty-one billion, four hundred forty million, twenty-two thousand, four hundred fifty".