2221338735 has 320 divisors, whose sum is σ = 5486469120. Its totient is φ = 831409920.

The previous prime is 2221338733. The next prime is 2221338737. The reversal of 2221338735 is 5378331222.

2221338735 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2221338733) and next prime (2221338737).

It is not a de Polignac number, because 2221338735 - 2¹ = 2221338733 is a prime.

It is a super-2 number, since 2×2221338735² = 9868691551222800450, which contains 22 as substring.

Its product of digits (60480) is a multiple of the sum of its prime factors (240).

It is a self number, because there is not a number n which added to its sum of digits gives 2221338735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221338733) by changing a digit.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 13627764 + ... + 13627926.

It is an arithmetic number, because the mean of its divisors is an integer number (17145216).

Almost surely, 2^2221338735 is an apocalyptic number.

2221338735 is an abundant number, since it is smaller than the sum of its proper divisors (3265130385).

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

2221338735 is a wasteful number, since it uses less digits than its factorization.

2221338735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 231 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 2221338735 is about 47131.0803504439. The cubic root of 2221338735 is about 1304.7829206896.

Adding to 2221338735 its reverse (5378331222), we get a palindrome (7599669957).

The spelling of 2221338735 in words is "two billion, two hundred twenty-one million, three hundred thirty-eight thousand, seven hundred thirty-five".