2221440012402 has 128 divisors (see below), whose sum is σ = 5271808147200. Its totient is φ = 621127922688.

The previous prime is 2221440012401. The next prime is 2221440012413. The reversal of 2221440012402 is 2042100441222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2221440012401) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6327813 + ... + 6669639.

It is an arithmetic number, because the mean of its divisors is an integer number (41186001150).

Almost surely, 2^{2221440012402} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221440012402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2635904073600).

2221440012402 is an abundant number, since it is smaller than the sum of its proper divisors (3050368134798).

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

2221440012402 is a wasteful number, since it uses less digits than its factorization.

2221440012402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341917 (or 341891 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 2221440012402 its reverse (2042100441222), we get a palindrome (4263540453624).

The spelling of 2221440012402 in words is "two trillion, two hundred twenty-one billion, four hundred forty million, twelve thousand, four hundred two".