21229188192212 has 48 divisors (see below), whose sum is σ = 49881169468032. Its totient is φ = 7634872874880.

The previous prime is 21229188192197. The next prime is 21229188192259.

21229188192212 is nontrivially palindromic in base 10.

It is a congruent number.

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, 2650993523 + ... + 2651001530.

It is an arithmetic number, because the mean of its divisors is an integer number (1039191030584).

Almost surely, 2^{21229188192212} is an apocalyptic number.

21229188192212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21229188192212 is an abundant number, since it is smaller than the sum of its proper divisors (28651981275820).

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

21229188192212 is a wasteful number, since it uses less digits than its factorization.

21229188192212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5301995088 (or 5301995086 counting only the distinct ones).

The product of its digits is 331776, while the sum is 50.

The spelling of 21229188192212 in words is "twenty-one trillion, two hundred twenty-nine billion, one hundred eighty-eight million, one hundred ninety-two thousand, two hundred twelve".