1242011222 has 16 divisors (see below), whose sum is σ = 1901465280. Its totient is φ = 608230272.

The previous prime is 1242011213. The next prime is 1242011233. The reversal of 1242011222 is 2221102421.

It is a self number, because there is not a number n which added to its sum of digits gives 1242011222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52979 + ... + 72737.

It is an arithmetic number, because the mean of its divisors is an integer number (118841580).

Almost surely, 2^1242011222 is an apocalyptic number.

1242011222 is a deficient number, since it is larger than the sum of its proper divisors (659454058).

1242011222 is a wasteful number, since it uses less digits than its factorization.

1242011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20407.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1242011222 is about 35242.1795863990. The cubic root of 1242011222 is about 1074.9175987317.

Adding to 1242011222 its reverse (2221102421), we get a palindrome (3463113643).

The spelling of 1242011222 in words is "one billion, two hundred forty-two million, eleven thousand, two hundred twenty-two".