21211010002 has 64 divisors (see below), whose sum is σ = 40617158400. Its totient is φ = 8080208640.

The previous prime is 21211009969. The next prime is 21211010003. The reversal of 21211010002 is 20001011212.

It is not an unprimeable number, because it can be changed into a prime (21211010003) 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, 2047977 + ... + 2058307.

It is an arithmetic number, because the mean of its divisors is an integer number (634643100).

Almost surely, 2^21211010002 is an apocalyptic number.

21211010002 is a deficient number, since it is larger than the sum of its proper divisors (19406148398).

21211010002 is a wasteful number, since it uses less digits than its factorization.

21211010002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10771.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21211010002 its reverse (20001011212), we get a palindrome (41212021214).

The spelling of 21211010002 in words is "twenty-one billion, two hundred eleven million, ten thousand, two".