1211102203042 has 8 divisors (see below), whose sum is σ = 1829913548076. Its totient is φ = 601131020352.

The previous prime is 1211102203033. The next prime is 1211102203049. The reversal of 1211102203042 is 2403022011121.

It can be written as a sum of positive squares in 2 ways, for example, as 1185923178001 + 25179025041 = 1089001^2 + 158679^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1211102203049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2210040243 + ... + 2210040790.

Almost surely, 2^{1211102203042} is an apocalyptic number.

1211102203042 is a deficient number, since it is larger than the sum of its proper divisors (618811345034).

1211102203042 is a wasteful number, since it uses less digits than its factorization.

1211102203042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4420081172.

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

Adding to 1211102203042 its reverse (2403022011121), we get a palindrome (3614124214163).

The spelling of 1211102203042 in words is "one trillion, two hundred eleven billion, one hundred two million, two hundred three thousand, forty-two".