21011011210010 has 32 divisors (see below), whose sum is σ = 38345396060160. Its totient is φ = 8287654866048.

The previous prime is 21011011209967. The next prime is 21011011210051. The reversal of 21011011210010 is 1001211011012.

It is a junction number, because it is equal to n+sod(n) for n = 21011011209973 and 21011011210000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 925559 + ... + 6548181.

It is an arithmetic number, because the mean of its divisors is an integer number (1198293626880).

Almost surely, 2^{21011011210010} is an apocalyptic number.

21011011210010 is a deficient number, since it is larger than the sum of its proper divisors (17334384850150).

21011011210010 is a wasteful number, since it uses less digits than its factorization.

21011011210010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5627822.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 21011011210010 its reverse (1001211011012), we get a palindrome (22012222221022).

The spelling of 21011011210010 in words is "twenty-one trillion, eleven billion, eleven million, two hundred ten thousand, ten".