21211002002112 has 112 divisors (see below), whose sum is σ = 61288995462912. Its totient is φ = 6434540098560.

The previous prime is 21211002002107. The next prime is 21211002002123. The reversal of 21211002002112 is 21120020011212.

It is a junction number, because it is equal to n+sod(n) for n = 21211002002091 and 21211002002100.

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, 59667838 + ... + 60022269.

It is an arithmetic number, because the mean of its divisors is an integer number (547223173776).

Almost surely, 2^{21211002002112} is an apocalyptic number.

It is an amenable number.

21211002002112 is an abundant number, since it is smaller than the sum of its proper divisors (40077993460800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21211002002112 is a wasteful number, since it uses less digits than its factorization.

21211002002112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119690206 (or 119690196 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21211002002112 its reverse (21120020011212), we get a palindrome (42331022013324).

The spelling of 21211002002112 in words is "twenty-one trillion, two hundred eleven billion, two million, two thousand, one hundred twelve".