21220000002212 has 12 divisors (see below), whose sum is σ = 40510909095216. Its totient is φ = 9645454546440.

The previous prime is 21220000002211. The next prime is 21220000002217.

21220000002212 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (21220000002211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241136363618 + ... + 241136363705.

It is an arithmetic number, because the mean of its divisors is an integer number (3375909091268).

Almost surely, 2^{21220000002212} is an apocalyptic number.

21220000002212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21220000002212 is a deficient number, since it is larger than the sum of its proper divisors (19290909093004).

21220000002212 is a wasteful number, since it uses less digits than its factorization.

21220000002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482272727338 (or 482272727336 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

It can be divided in two parts, 2122000000 and 2212, that added together give a palindrome (2122002212).

The spelling of 21220000002212 in words is "twenty-one trillion, two hundred twenty billion, two thousand, two hundred twelve".