21100011010 has 16 divisors (see below), whose sum is σ = 40901560056. Its totient is φ = 7790773248.

The previous prime is 21100011001. The next prime is 21100011019. The reversal of 21100011010 is 1011000112.

It is an interprime number because it is at equal distance from previous prime (21100011001) and next prime (21100011019).

It can be written as a sum of positive squares in 4 ways, for example, as 12944295529 + 8155715481 = 113773^2 + 90309^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21100010984 and 21100011002.

It is not an unprimeable number, because it can be changed into a prime (21100011019) 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, 81153759 + ... + 81154018.

Almost surely, 2^21100011010 is an apocalyptic number.

21100011010 is a deficient number, since it is larger than the sum of its proper divisors (19801549046).

21100011010 is a wasteful number, since it uses less digits than its factorization.

21100011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162307797.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 21100011010 its reverse (1011000112), we get a palindrome (22111011122).

The spelling of 21100011010 in words is "twenty-one billion, one hundred million, eleven thousand, ten".