222141420 has 96 divisors (see below), whose sum is σ = 698120640. Its totient is φ = 58636800.

The previous prime is 222141379. The next prime is 222141427. The reversal of 222141420 is 24141222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 222141393 and 222141402.

It is not an unprimeable number, because it can be changed into a prime (222141427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52504 + ... + 56576.

It is an arithmetic number, because the mean of its divisors is an integer number (7272090).

Almost surely, 2^222141420 is an apocalyptic number.

222141420 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 222141420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349060320).

222141420 is an abundant number, since it is smaller than the sum of its proper divisors (475979220).

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

222141420 is a wasteful number, since it uses less digits than its factorization.

222141420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192 (or 4184 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 222141420 is about 14904.4094146665. The cubic root of 222141420 is about 605.6334416866.

Adding to 222141420 its reverse (24141222), we get a palindrome (246282642).

The spelling of 222141420 in words is "two hundred twenty-two million, one hundred forty-one thousand, four hundred twenty".