21200212122002 has 8 divisors (see below), whose sum is σ = 31927012678512. Its totient is φ = 10557874562500.

The previous prime is 21200212121993. The next prime is 21200212122071. The reversal of 21200212122002 is 20022121200212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21115748624 + ... + 21115749627.

It is an arithmetic number, because the mean of its divisors is an integer number (3990876584814).

Almost surely, 2^{21200212122002} is an apocalyptic number.

21200212122002 is a deficient number, since it is larger than the sum of its proper divisors (10726800556510).

21200212122002 is a wasteful number, since it uses less digits than its factorization.

21200212122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42231498504.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21200212122002 its reverse (20022121200212), we get a palindrome (41222333322214).

The spelling of 21200212122002 in words is "twenty-one trillion, two hundred billion, two hundred twelve million, one hundred twenty-two thousand, two".