1422400221 has 12 divisors (see below), whose sum is σ = 2241358080. Its totient is φ = 862060680.

The previous prime is 1422400193. The next prime is 1422400223. The reversal of 1422400221 is 1220042241.

1422400221 is a `hidden beast` number, since 1 + 42 + 2 + 400 + 221 = 666.

It is not a de Polignac number, because 1422400221 - 2²¹ = 1420303069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1422400194 and 1422400203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422400223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7183741 + ... + 7183938.

It is an arithmetic number, because the mean of its divisors is an integer number (186779840).

Almost surely, 2^1422400221 is an apocalyptic number.

1422400221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1422400221 is a deficient number, since it is larger than the sum of its proper divisors (818957859).

1422400221 is a wasteful number, since it uses less digits than its factorization.

1422400221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14367696 (or 14367693 counting only the distinct ones).

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

The square root of 1422400221 is about 37714.7215421246. The cubic root of 1422400221 is about 1124.6238007318.

Adding to 1422400221 its reverse (1220042241), we get a palindrome (2642442462).

The spelling of 1422400221 in words is "one billion, four hundred twenty-two million, four hundred thousand, two hundred twenty-one".