21203422430212 has 24 divisors (see below), whose sum is σ = 40479409908000. Its totient is φ = 9637883832960.

The previous prime is 21203422430161. The next prime is 21203422430251.

21203422430212 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14032243 + ... + 15469669.

It is an arithmetic number, because the mean of its divisors is an integer number (1686642079500).

Almost surely, 2^{21203422430212} is an apocalyptic number.

21203422430212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21203422430212 is a deficient number, since it is larger than the sum of its proper divisors (19275987477788).

21203422430212 is a wasteful number, since it uses less digits than its factorization.

21203422430212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772691 (or 1772689 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

It can be divided in two parts, 2120342 and 2430212, that added together give a palindrome (4550554).

The spelling of 21203422430212 in words is "twenty-one trillion, two hundred three billion, four hundred twenty-two million, four hundred thirty thousand, two hundred twelve".