21011114212 has 36 divisors (see below), whose sum is σ = 40508480320. Its totient is φ = 9528654960.

The previous prime is 21011114207. The next prime is 21011114227. The reversal of 21011114212 is 21241111012.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163033 + ... + 261919.

Almost surely, 2^21011114212 is an apocalyptic number.

21011114212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21011114212 is a deficient number, since it is larger than the sum of its proper divisors (19497366108).

21011114212 is a wasteful number, since it uses less digits than its factorization.

21011114212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99352 (or 99339 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21011114212 its reverse (21241111012), we get a palindrome (42252225224).

The spelling of 21011114212 in words is "twenty-one billion, eleven million, one hundred fourteen thousand, two hundred twelve".