212321001002 has 16 divisors (see below), whose sum is σ = 347443408800. Its totient is φ = 96507033840.

The previous prime is 212321001001. The next prime is 212321001007. The reversal of 212321001002 is 200100123212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (212321001001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939524 + ... + 1143392.

It is an arithmetic number, because the mean of its divisors is an integer number (21715213050).

Almost surely, 2^212321001002 is an apocalyptic number.

212321001002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212321001002 is a deficient number, since it is larger than the sum of its proper divisors (135122407798).

212321001002 is a wasteful number, since it uses less digits than its factorization.

212321001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251221.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 212321001002 its reverse (200100123212), we get a palindrome (412421124214).

The spelling of 212321001002 in words is "two hundred twelve billion, three hundred twenty-one million, one thousand, two".