1203111201042 has 24 divisors (see below), whose sum is σ = 2720077498944. Its totient is φ = 383600672664.

The previous prime is 1203111201001. The next prime is 1203111201043. The reversal of 1203111201042 is 2401021113021.

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

It is not an unprimeable number, because it can be changed into a prime (1203111201043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1453032438 + ... + 1453033265.

It is an arithmetic number, because the mean of its divisors is an integer number (113336562456).

Almost surely, 2^{1203111201042} is an apocalyptic number.

1203111201042 is an abundant number, since it is smaller than the sum of its proper divisors (1516966297902).

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

1203111201042 is a wasteful number, since it uses less digits than its factorization.

1203111201042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906065734 (or 2906065731 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1203111201042 its reverse (2401021113021), we get a palindrome (3604132314063).

The spelling of 1203111201042 in words is "one trillion, two hundred three billion, one hundred eleven million, two hundred one thousand, forty-two".