21203030212 has 24 divisors (see below), whose sum is σ = 45668065856. Its totient is φ = 8388011808.

The previous prime is 21203030197. The next prime is 21203030213.

21203030212 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (21203030213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29124678 + ... + 29125405.

Almost surely, 2^21203030212 is an apocalyptic number.

It is an amenable number.

21203030212 is an abundant number, since it is smaller than the sum of its proper divisors (24465035644).

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

21203030212 is a wasteful number, since it uses less digits than its factorization.

21203030212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58250107 (or 58250105 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

It can be divided in two parts, 212030 and 30212, that added together give a palindrome (242242).

The spelling of 21203030212 in words is "twenty-one billion, two hundred three million, thirty thousand, two hundred twelve".