21011100010010 has 16 divisors (see below), whose sum is σ = 41258160019872. Its totient is φ = 7640400003600.

The previous prime is 21011100010007. The next prime is 21011100010037. The reversal of 21011100010010 is 1001000111012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21011100010010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95504999936 + ... + 95505000155.

It is an arithmetic number, because the mean of its divisors is an integer number (2578635001242).

Almost surely, 2^{21011100010010} is an apocalyptic number.

21011100010010 is a deficient number, since it is larger than the sum of its proper divisors (20247060009862).

21011100010010 is a wasteful number, since it uses less digits than its factorization.

21011100010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191010000109.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 21011100010010 its reverse (1001000111012), we get a palindrome (22012100121022).

The spelling of 21011100010010 in words is "twenty-one trillion, eleven billion, one hundred million, ten thousand, ten".