21442023402112 has 32 divisors (see below), whose sum is σ = 42717281371380. Its totient is φ = 10720823371776.

The previous prime is 21442023402047. The next prime is 21442023402227. The reversal of 21442023402112 is 21120432024412.

It can be written as a sum of positive squares in 2 ways, for example, as 21301326392896 + 140697009216 = 4615336^2 + 375096^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5991058 + ... + 8875630.

Almost surely, 2^{21442023402112} is an apocalyptic number.

It is an amenable number.

21442023402112 is a deficient number, since it is larger than the sum of its proper divisors (21275257969268).

21442023402112 is an equidigital number, since it uses as much as digits as its factorization.

21442023402112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2942660 (or 2942648 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 21442023402112 its reverse (21120432024412), we get a palindrome (42562455426524).

The spelling of 21442023402112 in words is "twenty-one trillion, four hundred forty-two billion, twenty-three million, four hundred two thousand, one hundred twelve".