21103200112 has 80 divisors (see below), whose sum is σ = 42147436320. Its totient is φ = 10232487936.

The previous prime is 21103200089. The next prime is 21103200137. The reversal of 21103200112 is 21100230112.

It is a junction number, because it is equal to n+sod(n) for n = 21103200092 and 21103200101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35586888 + ... + 35587480.

It is an arithmetic number, because the mean of its divisors is an integer number (526842954).

Almost surely, 2^21103200112 is an apocalyptic number.

It is an amenable number.

21103200112 is a deficient number, since it is larger than the sum of its proper divisors (21044236208).

21103200112 is a wasteful number, since it uses less digits than its factorization.

21103200112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130 (or 1124 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21103200112 its reverse (21100230112), we get a palindrome (42203430224).

The spelling of 21103200112 in words is "twenty-one billion, one hundred three million, two hundred thousand, one hundred twelve".