1211203020442 has 8 divisors (see below), whose sum is σ = 1817771436000. Its totient is φ = 605279208444.

The previous prime is 1211203020431. The next prime is 1211203020491. The reversal of 1211203020442 is 2440203021121.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161146192 + ... + 161153707.

It is an arithmetic number, because the mean of its divisors is an integer number (227221429500).

Almost surely, 2^{1211203020442} is an apocalyptic number.

1211203020442 is a deficient number, since it is larger than the sum of its proper divisors (606568415558).

1211203020442 is a wasteful number, since it uses less digits than its factorization.

1211203020442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322301780.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 1211203020442 its reverse (2440203021121), we get a palindrome (3651406041563).

The spelling of 1211203020442 in words is "one trillion, two hundred eleven billion, two hundred three million, twenty thousand, four hundred forty-two".