21202422420212 has 144 divisors (see below), whose sum is σ = 44039734421760. Its totient is φ = 8891484856320.

The previous prime is 21202422420211. The next prime is 21202422420251.

21202422420212 is nontrivially palindromic in base 10.

21202422420212 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21202422420212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202422420211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 171302693 + ... + 171426419.

It is an arithmetic number, because the mean of its divisors is an integer number (305831489040).

Almost surely, 2^{21202422420212} is an apocalyptic number.

21202422420212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21202422420212 is an abundant number, since it is smaller than the sum of its proper divisors (22837312001548).

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

21202422420212 is a wasteful number, since it uses less digits than its factorization.

21202422420212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124182 (or 124169 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

It can be divided in two parts, 2120242 and 2420212, that added together give a palindrome (4540454).

The spelling of 21202422420212 in words is "twenty-one trillion, two hundred two billion, four hundred twenty-two million, four hundred twenty thousand, two hundred twelve".