11211212204142 has 32 divisors (see below), whose sum is σ = 23613861830400. Its totient is φ = 3538686328128.

The previous prime is 11211212204119. The next prime is 11211212204177. The reversal of 11211212204142 is 24140221211211.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 23323167 + ... + 23799002.

It is an arithmetic number, because the mean of its divisors is an integer number (737933182200).

Almost surely, 2^{11211212204142} is an apocalyptic number.

11211212204142 is an abundant number, since it is smaller than the sum of its proper divisors (12402649626258).

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

11211212204142 is a wasteful number, since it uses less digits than its factorization.

11211212204142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47124280.

The product of its (nonzero) digits is 512, while the sum is 24.

Adding to 11211212204142 its reverse (24140221211211), we get a palindrome (35351433415353).

The spelling of 11211212204142 in words is "eleven trillion, two hundred eleven billion, two hundred twelve million, two hundred four thousand, one hundred forty-two".