10221212000 has 48 divisors (see below), whose sum is σ = 25113527712. Its totient is φ = 4088483200.

The previous prime is 10221211999. The next prime is 10221212011. The reversal of 10221212000 is 21212201.

It is a happy number.

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, 1273652 + ... + 1281651.

It is an arithmetic number, because the mean of its divisors is an integer number (523198494).

Almost surely, 2^10221212000 is an apocalyptic number.

10221212000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221212000 is an abundant number, since it is smaller than the sum of its proper divisors (14892315712).

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

10221212000 is an equidigital number, since it uses as much as digits as its factorization.

10221212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555328 (or 2555310 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10221212000 its reverse (21212201), we get a palindrome (10242424201).

The spelling of 10221212000 in words is "ten billion, two hundred twenty-one million, two hundred twelve thousand".