21112210111012 has 12 divisors (see below), whose sum is σ = 36986570494720. Its totient is φ = 10544618541096.

The previous prime is 21112210110949. The next prime is 21112210111033. The reversal of 21112210111012 is 21011101221112.

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, 2871624468 + ... + 2871631819.

Almost surely, 2^{21112210111012} is an apocalyptic number.

It is an amenable number.

21112210111012 is a deficient number, since it is larger than the sum of its proper divisors (15874360383708).

21112210111012 is a wasteful number, since it uses less digits than its factorization.

21112210111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5743257210 (or 5743257208 counting only the distinct ones).

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

Adding to 21112210111012 its reverse (21011101221112), we get a palindrome (42123311332124).

It can be divided in two parts, 21112 and 210111012, that multiplied together give a palindrome (4435863685344).

The spelling of 21112210111012 in words is "twenty-one trillion, one hundred twelve billion, two hundred ten million, one hundred eleven thousand, twelve".