2221021142340 has 384 divisors, whose sum is σ = 8432491253760. Its totient is φ = 421790976000.

The previous prime is 2221021142299. The next prime is 2221021142357. The reversal of 2221021142340 is 432411201222.

It is a self number, because there is not a number n which added to its sum of digits gives 2221021142340.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5882991 + ... + 6249129.

It is an arithmetic number, because the mean of its divisors is an integer number (21959612640).

Almost surely, 2^{2221021142340} is an apocalyptic number.

2221021142340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221021142340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4216245626880).

2221021142340 is an abundant number, since it is smaller than the sum of its proper divisors (6211470111420).

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

2221021142340 is a wasteful number, since it uses less digits than its factorization.

2221021142340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366283 (or 366281 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 2221021142340 its reverse (432411201222), we get a palindrome (2653432343562).

The spelling of 2221021142340 in words is "two trillion, two hundred twenty-one billion, twenty-one million, one hundred forty-two thousand, three hundred forty".