1226221142 has 8 divisors (see below), whose sum is σ = 1840108800. Its totient is φ = 612851544.

The previous prime is 1226221133. The next prime is 1226221147. The reversal of 1226221142 is 2411226221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226221147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123542 + ... + 133097.

It is an arithmetic number, because the mean of its divisors is an integer number (230013600).

Almost surely, 2^1226221142 is an apocalyptic number.

1226221142 is a deficient number, since it is larger than the sum of its proper divisors (613887658).

1226221142 is a wasteful number, since it uses less digits than its factorization.

1226221142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259030.

The product of its digits is 768, while the sum is 23.

The square root of 1226221142 is about 35017.4405403936. The cubic root of 1226221142 is about 1070.3429017157.

Adding to 1226221142 its reverse (2411226221), we get a palindrome (3637447363).

The spelling of 1226221142 in words is "one billion, two hundred twenty-six million, two hundred twenty-one thousand, one hundred forty-two".