21211110002 has 8 divisors (see below), whose sum is σ = 33199998336. Its totient is φ = 10144443892.

The previous prime is 21211109957. The next prime is 21211110017. The reversal of 21211110002 is 20001111212.

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

It is a super-2 number, since 2×21211110002² (a number of 21 digits) contains 22 as substring.

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, 230555498 + ... + 230555589.

It is an arithmetic number, because the mean of its divisors is an integer number (4149999792).

Almost surely, 2^21211110002 is an apocalyptic number.

21211110002 is a deficient number, since it is larger than the sum of its proper divisors (11988888334).

21211110002 is a wasteful number, since it uses less digits than its factorization.

21211110002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461111112.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21211110002 its reverse (20001111212), we get a palindrome (41212221214).

The spelling of 21211110002 in words is "twenty-one billion, two hundred eleven million, one hundred ten thousand, two".