21100011002 has 16 divisors (see below), whose sum is σ = 36255382272. Its totient is φ = 9021878160.

The previous prime is 21100011001. The next prime is 21100011019. The reversal of 21100011002 is 20011000112.

It is not an unprimeable number, because it can be changed into a prime (21100011001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1742393 + ... + 1754460.

It is an arithmetic number, because the mean of its divisors is an integer number (2265961392).

Almost surely, 2^21100011002 is an apocalyptic number.

21100011002 is a deficient number, since it is larger than the sum of its proper divisors (15155371270).

21100011002 is a wasteful number, since it uses less digits than its factorization.

21100011002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3497293.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 21100011002 its reverse (20011000112), we get a palindrome (41111011114).

The spelling of 21100011002 in words is "twenty-one billion, one hundred million, eleven thousand, two".