1211222342 has 24 divisors (see below), whose sum is σ = 2003181096. Its totient is φ = 548856000.

The previous prime is 1211222291. The next prime is 1211222347. The reversal of 1211222342 is 2432221121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211222347) 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, 72542 + ... + 87662.

It is an arithmetic number, because the mean of its divisors is an integer number (83465879).

Almost surely, 2^1211222342 is an apocalyptic number.

1211222342 is a deficient number, since it is larger than the sum of its proper divisors (791958754).

1211222342 is a wasteful number, since it uses less digits than its factorization.

1211222342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15476 (or 15465 counting only the distinct ones).

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

The square root of 1211222342 is about 34802.6197577136. The cubic root of 1211222342 is about 1065.9609397996.

Adding to 1211222342 its reverse (2432221121), we get a palindrome (3643443463).

The spelling of 1211222342 in words is "one billion, two hundred eleven million, two hundred twenty-two thousand, three hundred forty-two".