21032301212 has 48 divisors (see below), whose sum is σ = 40586079072. Its totient is φ = 9475280640.

The previous prime is 21032301211. The next prime is 21032301221. The reversal of 21032301212 is 21210323012.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032301211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6610262 + ... + 6613442.

It is an arithmetic number, because the mean of its divisors is an integer number (845543314).

Almost surely, 2^21032301212 is an apocalyptic number.

It is an amenable number.

21032301212 is a deficient number, since it is larger than the sum of its proper divisors (19553777860).

21032301212 is a wasteful number, since it uses less digits than its factorization.

21032301212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6198 (or 6196 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21032301212 its reverse (21210323012), we get a palindrome (42242624224).

The spelling of 21032301212 in words is "twenty-one billion, thirty-two million, three hundred one thousand, two hundred twelve".