1211200444242 has 24 divisors (see below), whose sum is σ = 2649745959744. Its totient is φ = 399813738264.

The previous prime is 1211200444193. The next prime is 1211200444283. The reversal of 1211200444242 is 2424440021121.

1211200444242 is a `hidden beast` number, since 1 + 2 + 11 + 200 + 4 + 442 + 4 + 2 = 666.

It is a super-2 number, since 2×1211200444242² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326643358 + ... + 326647065.

It is an arithmetic number, because the mean of its divisors is an integer number (110406081656).

Almost surely, 2^{1211200444242} is an apocalyptic number.

1211200444242 is an abundant number, since it is smaller than the sum of its proper divisors (1438545515502).

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

1211200444242 is a wasteful number, since it uses less digits than its factorization.

1211200444242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653290534 (or 653290531 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 1211200444242 its reverse (2424440021121), we get a palindrome (3635640465363).

The spelling of 1211200444242 in words is "one trillion, two hundred eleven billion, two hundred million, four hundred forty-four thousand, two hundred forty-two".