1121222123142 has 64 divisors (see below), whose sum is σ = 2453262626304. Its totient is φ = 338798211840.

The previous prime is 1121222123113. The next prime is 1121222123201. The reversal of 1121222123142 is 2413212221211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120079098 + ... + 120088434.

It is an arithmetic number, because the mean of its divisors is an integer number (38332228536).

Almost surely, 2^{1121222123142} is an apocalyptic number.

1121222123142 is an abundant number, since it is smaller than the sum of its proper divisors (1332040503162).

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

1121222123142 is a wasteful number, since it uses less digits than its factorization.

1121222123142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14333.

The product of its digits is 768, while the sum is 24.

Adding to 1121222123142 its reverse (2413212221211), we get a palindrome (3534434344353).

The spelling of 1121222123142 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-three thousand, one hundred forty-two".