12021131023122 has 128 divisors (see below), whose sum is σ = 27158708505600. Its totient is φ = 3521394100224.

The previous prime is 12021131023081. The next prime is 12021131023127. The reversal of 12021131023122 is 22132013112021.

It is not an unprimeable number, because it can be changed into a prime (12021131023127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 821164279 + ... + 821178917.

It is an arithmetic number, because the mean of its divisors is an integer number (212177410200).

Almost surely, 2^{12021131023122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12021131023122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13579354252800).

12021131023122 is an abundant number, since it is smaller than the sum of its proper divisors (15137577482478).

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

12021131023122 is a wasteful number, since it uses less digits than its factorization.

12021131023122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19732.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 12021131023122 its reverse (22132013112021), we get a palindrome (34153144135143).

The spelling of 12021131023122 in words is "twelve trillion, twenty-one billion, one hundred thirty-one million, twenty-three thousand, one hundred twenty-two".