21142223030412 has 288 divisors, whose sum is σ = 61669992384000. Its totient is φ = 6039896647680.

The previous prime is 21142223030323. The next prime is 21142223030413. The reversal of 21142223030412 is 21403032224112.

21142223030412 is a `hidden beast` number, since 2 + 1 + 1 + 422 + 230 + 3 + 0 + 4 + 1 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (21142223030413) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1996616014 + ... + 1996626602.

It is an arithmetic number, because the mean of its divisors is an integer number (214131918000).

Almost surely, 2^{21142223030412} is an apocalyptic number.

21142223030412 is a gapful number since it is divisible by the number (22) 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 21142223030412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30834996192000).

21142223030412 is an abundant number, since it is smaller than the sum of its proper divisors (40527769353588).

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

21142223030412 is a wasteful number, since it uses less digits than its factorization.

21142223030412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11901 (or 11896 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 21142223030412 its reverse (21403032224112), we get a palindrome (42545255254524).

The spelling of 21142223030412 in words is "twenty-one trillion, one hundred forty-two billion, two hundred twenty-three million, thirty thousand, four hundred twelve".