20400110421112 has 32 divisors (see below), whose sum is σ = 39165312574080. Its totient is φ = 9956336957280.

The previous prime is 20400110421101. The next prime is 20400110421113. The reversal of 20400110421112 is 21112401100402.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20400110421112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20400110421113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18840628 + ... + 19893955.

It is an arithmetic number, because the mean of its divisors is an integer number (1223916017940).

Almost surely, 2^{20400110421112} is an apocalyptic number.

It is an amenable number.

20400110421112 is a deficient number, since it is larger than the sum of its proper divisors (18765202152968).

20400110421112 is a wasteful number, since it uses less digits than its factorization.

20400110421112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38736163 (or 38736159 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20400110421112 its reverse (21112401100402), we get a palindrome (41512511521514).

The spelling of 20400110421112 in words is "twenty trillion, four hundred billion, one hundred ten million, four hundred twenty-one thousand, one hundred twelve".