12010021222212 has 144 divisors (see below), whose sum is σ = 33367027822128. Its totient is φ = 3619548241920.

The previous prime is 12010021222187. The next prime is 12010021222307. The reversal of 12010021222212 is 21222212001021.

It is a happy number.

12010021222212 is a `hidden beast` number, since 120 + 100 + 212 + 22 + 212 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 697669290756 + 11312351931456 = 835266^2 + 3363384^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14300512 + ... + 15117032.

It is an arithmetic number, because the mean of its divisors is an integer number (231715470987).

Almost surely, 2^{12010021222212} is an apocalyptic number.

12010021222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12010021222212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16683513911064).

12010021222212 is an abundant number, since it is smaller than the sum of its proper divisors (21357006599916).

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

12010021222212 is a wasteful number, since it uses less digits than its factorization.

12010021222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817190 (or 817185 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12010021222212 its reverse (21222212001021), we get a palindrome (33232233223233).

The spelling of 12010021222212 in words is "twelve trillion, ten billion, twenty-one million, two hundred twenty-two thousand, two hundred twelve".