12021110142 has 16 divisors (see below), whose sum is σ = 25456468752. Its totient is φ = 3771328640.

The previous prime is 12021110141. The next prime is 12021110201. The reversal of 12021110142 is 24101112021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021110141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58926909 + ... + 58927112.

It is an arithmetic number, because the mean of its divisors is an integer number (1591029297).

Almost surely, 2^12021110142 is an apocalyptic number.

12021110142 is an abundant number, since it is smaller than the sum of its proper divisors (13435358610).

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

12021110142 is a wasteful number, since it uses less digits than its factorization.

12021110142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117854043.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12021110142 its reverse (24101112021), we get a palindrome (36122222163).

The spelling of 12021110142 in words is "twelve billion, twenty-one million, one hundred ten thousand, one hundred forty-two".