21210322301212 has 12 divisors (see below), whose sum is σ = 40492433484216. Its totient is φ = 9641055591440.

The previous prime is 21210322301209. The next prime is 21210322301227.

21210322301212 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×21210322301212³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 241026389743 + ... + 241026389830.

It is an arithmetic number, because the mean of its divisors is an integer number (3374369457018).

Almost surely, 2^{21210322301212} is an apocalyptic number.

21210322301212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21210322301212 is a deficient number, since it is larger than the sum of its proper divisors (19282111183004).

21210322301212 is a wasteful number, since it uses less digits than its factorization.

21210322301212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482052779588 (or 482052779586 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

It can be divided in two parts, 2121032 and 2301212, that added together give a palindrome (4422244).

The spelling of 21210322301212 in words is "twenty-one trillion, two hundred ten billion, three hundred twenty-two million, three hundred one thousand, two hundred twelve".