21201102112 has 24 divisors (see below), whose sum is σ = 42327556992. Its totient is φ = 10451246400.

The previous prime is 21201102103. The next prime is 21201102121. The reversal of 21201102112 is 21120110212.

It is an interprime number because it is at equal distance from previous prime (21201102103) and next prime (21201102121).

It is a junction number, because it is equal to n+sod(n) for n = 21201102092 and 21201102101.

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, 4663464 + ... + 4668007.

It is an arithmetic number, because the mean of its divisors is an integer number (1763648208).

Almost surely, 2^21201102112 is an apocalyptic number.

It is an amenable number.

21201102112 is a deficient number, since it is larger than the sum of its proper divisors (21126454880).

21201102112 is an equidigital number, since it uses as much as digits as its factorization.

21201102112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9331552 (or 9331544 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21201102112 its reverse (21120110212), we get a palindrome (42321212324).

The spelling of 21201102112 in words is "twenty-one billion, two hundred one million, one hundred two thousand, one hundred twelve".