21211000011212 has 24 divisors (see below), whose sum is σ = 41006306127360. Its totient is φ = 9519321062160.

The previous prime is 21211000011191. The next prime is 21211000011241.

21211000011212 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3051060968 + ... + 3051067919.

It is an arithmetic number, because the mean of its divisors is an integer number (1708596088640).

Almost surely, 2^{21211000011212} is an apocalyptic number.

21211000011212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21211000011212 is a deficient number, since it is larger than the sum of its proper divisors (19795306116148).

21211000011212 is a wasteful number, since it uses less digits than its factorization.

21211000011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6102128981 (or 6102128979 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

It can be divided in two parts, 212110000 and 11212, that added together give a palindrome (212121212).

The spelling of 21211000011212 in words is "twenty-one trillion, two hundred eleven billion, eleven thousand, two hundred twelve".