21142423310212 has 24 divisors (see below), whose sum is σ = 37244667223232. Its totient is φ = 10501091316000.

The previous prime is 21142423310149. The next prime is 21142423310237. The reversal of 21142423310212 is 21201332424112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109301662 + ... + 109494922.

Almost surely, 2^{21142423310212} is an apocalyptic number.

It is an amenable number.

21142423310212 is a deficient number, since it is larger than the sum of its proper divisors (16102243913020).

21142423310212 is a wasteful number, since it uses less digits than its factorization.

21142423310212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374539 (or 374537 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 21142423310212 its reverse (21201332424112), we get a palindrome (42343755734324).

The spelling of 21142423310212 in words is "twenty-one trillion, one hundred forty-two billion, four hundred twenty-three million, three hundred ten thousand, two hundred twelve".