1431221222 has 16 divisors (see below), whose sum is σ = 2198702880. Its totient is φ = 698460672.

The previous prime is 1431221221. The next prime is 1431221251. The reversal of 1431221222 is 2221221341.

It is a junction number, because it is equal to n+sod(n) for n = 1431221194 and 1431221203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431221221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14522 + ... + 55437.

It is an arithmetic number, because the mean of its divisors is an integer number (137418930).

Almost surely, 2^1431221222 is an apocalyptic number.

1431221222 is a deficient number, since it is larger than the sum of its proper divisors (767481658).

1431221222 is a wasteful number, since it uses less digits than its factorization.

1431221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70207.

The product of its digits is 384, while the sum is 20.

The square root of 1431221222 is about 37831.4845333883. The cubic root of 1431221222 is about 1126.9437926695.

Adding to 1431221222 its reverse (2221221341), we get a palindrome (3652442563).

The spelling of 1431221222 in words is "one billion, four hundred thirty-one million, two hundred twenty-one thousand, two hundred twenty-two".