210321012 has 24 divisors (see below), whose sum is σ = 535362912. Its totient is φ = 63733600.

The previous prime is 210320983. The next prime is 210321037. The reversal of 210321012 is 210123012.

210321012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

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

It is a congruent number.

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, 796539 + ... + 796802.

It is an arithmetic number, because the mean of its divisors is an integer number (22306788).

Almost surely, 2^210321012 is an apocalyptic number.

210321012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

210321012 is an abundant number, since it is smaller than the sum of its proper divisors (325041900).

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

210321012 is a wasteful number, since it uses less digits than its factorization.

210321012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593359 (or 1593357 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 210321012 is about 14502.4484829287. The cubic root of 210321012 is about 594.6949093803.

Adding to 210321012 its reverse (210123012), we get a palindrome (420444024).

The spelling of 210321012 in words is "two hundred ten million, three hundred twenty-one thousand, twelve".