222100340 has 108 divisors (see below), whose sum is σ = 596685348. Its totient is φ = 69189120.

The previous prime is 222100331. The next prime is 222100343. The reversal of 222100340 is 43001222.

It can be written as a sum of positive squares in 2 ways, for example, as 34245904 + 187854436 = 5852^2 + 13706^2 .

It is a super-2 number, since 2×222100340² = 98657122056231200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100343) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 117644 + ... + 119516.

Almost surely, 2^222100340 is an apocalyptic number.

222100340 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 222100340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298342674).

222100340 is an abundant number, since it is smaller than the sum of its proper divisors (374585008).

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

222100340 is a wasteful number, since it uses less digits than its factorization.

222100340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918 (or 1898 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 222100340 is about 14903.0312352890. The cubic root of 222100340 is about 605.5961066779.

Adding to 222100340 its reverse (43001222), we get a palindrome (265101562).

The spelling of 222100340 in words is "two hundred twenty-two million, one hundred thousand, three hundred forty".