21101000001010 has 96 divisors (see below), whose sum is σ = 41153506797312. Its totient is φ = 7781419645440.

The previous prime is 21101000000957. The next prime is 21101000001031. The reversal of 21101000001010 is 1010000010112.

It is a junction number, because it is equal to n+sod(n) for n = 21101000000984 and 21101000001002.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15555049 + ... + 16857091.

It is an arithmetic number, because the mean of its divisors is an integer number (428682362472).

Almost surely, 2^{21101000001010} is an apocalyptic number.

21101000001010 is a deficient number, since it is larger than the sum of its proper divisors (20052506796302).

21101000001010 is a wasteful number, since it uses less digits than its factorization.

21101000001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302196 (or 1302167 counting only the distinct ones).

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

Adding to 21101000001010 its reverse (1010000010112), we get a palindrome (22111000011122).

The spelling of 21101000001010 in words is "twenty-one trillion, one hundred one billion, one thousand, ten".