212221132002 has 64 divisors (see below), whose sum is σ = 517318139520. Its totient is φ = 63954100800.

The previous prime is 212221131979. The next prime is 212221132003. The reversal of 212221132002 is 200231122212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (212221132003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 879433 + ... + 1094460.

It is an arithmetic number, because the mean of its divisors is an integer number (8083095930).

Almost surely, 2^212221132002 is an apocalyptic number.

212221132002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212221132002 is an abundant number, since it is smaller than the sum of its proper divisors (305097007518).

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

212221132002 is a wasteful number, since it uses less digits than its factorization.

212221132002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974096 (or 1974090 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212221132002 its reverse (200231122212), we get a palindrome (412452254214).

The spelling of 212221132002 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred thirty-two thousand, two".