21111020002212 has 48 divisors (see below), whose sum is σ = 56430411555840. Its totient is φ = 6017324477472.

The previous prime is 21111020002183. The next prime is 21111020002229. The reversal of 21111020002212 is 21220002011112.

It is a junction number, because it is equal to n+sod(n) for n = 21111020002191 and 21111020002200.

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, 299871328 + ... + 299941719.

It is an arithmetic number, because the mean of its divisors is an integer number (1175633574080).

Almost surely, 2^{21111020002212} is an apocalyptic number.

It is an amenable number.

21111020002212 is an abundant number, since it is smaller than the sum of its proper divisors (35319391553628).

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

21111020002212 is a wasteful number, since it uses less digits than its factorization.

21111020002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599813480 (or 599813478 counting only the distinct ones).

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

Adding to 21111020002212 its reverse (21220002011112), we get a palindrome (42331022013324).

The spelling of 21111020002212 in words is "twenty-one trillion, one hundred eleven billion, twenty million, two thousand, two hundred twelve".