1201111142242 has 16 divisors (see below), whose sum is σ = 1975638305952. Its totient is φ = 543130801920.

The previous prime is 1201111142239. The next prime is 1201111142267. The reversal of 1201111142242 is 2422411111021.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141436068 + ... + 141444559.

It is an arithmetic number, because the mean of its divisors is an integer number (123477394122).

Almost surely, 2^{1201111142242} is an apocalyptic number.

1201111142242 is a deficient number, since it is larger than the sum of its proper divisors (774527163710).

1201111142242 is a wasteful number, since it uses less digits than its factorization.

1201111142242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282880833.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 1201111142242 its reverse (2422411111021), we get a palindrome (3623522253263).

The spelling of 1201111142242 in words is "one trillion, two hundred one billion, one hundred eleven million, one hundred forty-two thousand, two hundred forty-two".