222091401 has 32 divisors (see below), whose sum is σ = 344217600. Its totient is φ = 124755840.

The previous prime is 222091391. The next prime is 222091411. The reversal of 222091401 is 104190222.

222091401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (222091391) and next prime (222091411).

It is not a de Polignac number, because 222091401 - 2⁷ = 222091273 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (222091411) 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, 618460 + ... + 618818.

It is an arithmetic number, because the mean of its divisors is an integer number (10756800).

Almost surely, 2^222091401 is an apocalyptic number.

222091401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222091401 is a deficient number, since it is larger than the sum of its proper divisors (122126199).

222091401 is a wasteful number, since it uses less digits than its factorization.

222091401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 222091401 is about 14902.7313268407. The cubic root of 222091401 is about 605.5879819774.

The spelling of 222091401 in words is "two hundred twenty-two million, ninety-one thousand, four hundred one".