1211130442 has 16 divisors (see below), whose sum is σ = 1831092480. Its totient is φ = 600781552.

The previous prime is 1211130421. The next prime is 1211130449. The reversal of 1211130442 is 2440311121.

It is not an unprimeable number, because it can be changed into a prime (1211130449) 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, 170559 + ... + 177517.

It is an arithmetic number, because the mean of its divisors is an integer number (114443280).

Almost surely, 2^1211130442 is an apocalyptic number.

1211130442 is a deficient number, since it is larger than the sum of its proper divisors (619962038).

1211130442 is a wasteful number, since it uses less digits than its factorization.

1211130442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7637.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1211130442 is about 34801.2994297627. The cubic root of 1211130442 is about 1065.9339796276.

Adding to 1211130442 its reverse (2440311121), we get a palindrome (3651441563).

The spelling of 1211130442 in words is "one billion, two hundred eleven million, one hundred thirty thousand, four hundred forty-two".