1322040021 has 8 divisors (see below), whose sum is σ = 1763719104. Its totient is φ = 880860480.

The previous prime is 1322039993. The next prime is 1322040029. The reversal of 1322040021 is 1200402231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1322040021 - 2¹³ = 1322031829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322040029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118665 + ... + 129326.

It is an arithmetic number, because the mean of its divisors is an integer number (220464888).

Almost surely, 2^1322040021 is an apocalyptic number.

It is an amenable number.

1322040021 is a deficient number, since it is larger than the sum of its proper divisors (441679083).

1322040021 is a wasteful number, since it uses less digits than its factorization.

1322040021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249771.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1322040021 is about 36359.8682753390. The cubic root of 1322040021 is about 1097.5261267158.

Adding to 1322040021 its reverse (1200402231), we get a palindrome (2522442252).

The spelling of 1322040021 in words is "one billion, three hundred twenty-two million, forty thousand, twenty-one".