12021131010 has 128 divisors (see below), whose sum is σ = 34619166720. Its totient is φ = 2611927296.

The previous prime is 12021131009. The next prime is 12021131039. The reversal of 12021131010 is 1013112021.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 779656 + ... + 794924.

It is an arithmetic number, because the mean of its divisors is an integer number (270462240).

Almost surely, 2^12021131010 is an apocalyptic number.

12021131010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12021131010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17309583360).

12021131010 is an abundant number, since it is smaller than the sum of its proper divisors (22598035710).

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

12021131010 is a wasteful number, since it uses less digits than its factorization.

12021131010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15472.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 12021131010 its reverse (1013112021), we get a palindrome (13034243031).

The spelling of 12021131010 in words is "twelve billion, twenty-one million, one hundred thirty-one thousand, ten".