12002021142 has 32 divisors (see below), whose sum is σ = 25021370880. Its totient is φ = 3833225760.

The previous prime is 12002021123. The next prime is 12002021149. The reversal of 12002021142 is 24112020021.

It is a super-2 number, since 2×12002021142² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002021149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240478 + ... + 286065.

It is an arithmetic number, because the mean of its divisors is an integer number (781917840).

Almost surely, 2^12002021142 is an apocalyptic number.

12002021142 is an abundant number, since it is smaller than the sum of its proper divisors (13019349738).

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

12002021142 is a wasteful number, since it uses less digits than its factorization.

12002021142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526708.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12002021142 its reverse (24112020021), we get a palindrome (36114041163).

The spelling of 12002021142 in words is "twelve billion, two million, twenty-one thousand, one hundred forty-two".