2211342420 has 192 divisors, whose sum is σ = 7245987840. Its totient is φ = 493458432.

The previous prime is 2211342401. The next prime is 2211342449. The reversal of 2211342420 is 242431122.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5773549 + ... + 5773931.

It is an arithmetic number, because the mean of its divisors is an integer number (37739520).

Almost surely, 2^2211342420 is an apocalyptic number.

2211342420 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 2211342420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3622993920).

2211342420 is an abundant number, since it is smaller than the sum of its proper divisors (5034645420).

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

2211342420 is a wasteful number, since it uses less digits than its factorization.

2211342420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2211342420 is about 47024.9127590897. The cubic root of 2211342420 is about 1302.8227460978.

Adding to 2211342420 its reverse (242431122), we get a palindrome (2453773542).

The spelling of 2211342420 in words is "two billion, two hundred eleven million, three hundred forty-two thousand, four hundred twenty".