1242012222 has 48 divisors (see below), whose sum is σ = 2938021632. Its totient is φ = 376065360.

The previous prime is 1242012217. The next prime is 1242012223. The reversal of 1242012222 is 2222102421.

1242012222 is a `hidden beast` number, since 12 + 420 + 12 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1242012195 and 1242012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242012223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 447483 + ... + 450249.

It is an arithmetic number, because the mean of its divisors is an integer number (61208784).

Almost surely, 2^1242012222 is an apocalyptic number.

1242012222 is an abundant number, since it is smaller than the sum of its proper divisors (1696009410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242012222 is a wasteful number, since it uses less digits than its factorization.

1242012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5053 (or 5050 counting only the distinct ones).

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

The square root of 1242012222 is about 35242.1937739409. The cubic root of 1242012222 is about 1074.9178872200.

Adding to 1242012222 its reverse (2222102421), we get a palindrome (3464114643).

It can be divided in two parts, 12420 and 12222, that added together give a palindrome (24642).

The spelling of 1242012222 in words is "one billion, two hundred forty-two million, twelve thousand, two hundred twenty-two".