212321010 has 64 divisors (see below), whose sum is σ = 585169920. Its totient is φ = 48761280.

The previous prime is 212321003. The next prime is 212321051. The reversal of 212321010 is 10123212.

212321010 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a super-2 number, since 2×212321010² = 90160422574840200, which contains 22 as substring.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10662 + ... + 23201.

It is an arithmetic number, because the mean of its divisors is an integer number (9143280).

Almost surely, 2^212321010 is an apocalyptic number.

212321010 is an abundant number, since it is smaller than the sum of its proper divisors (372848910).

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

212321010 is a wasteful number, since it uses less digits than its factorization.

212321010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33903.

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

The square root of 212321010 is about 14571.2391374241. The cubic root of 212321010 is about 596.5740025811.

Adding to 212321010 its reverse (10123212), we get a palindrome (222444222).

The spelling of 212321010 in words is "two hundred twelve million, three hundred twenty-one thousand, ten".