21000200010101 has 16 divisors (see below), whose sum is σ = 22967320053888. Its totient is φ = 19084115937600.

The previous prime is 21000200010067. The next prime is 21000200010107. The reversal of 21000200010101 is 10101000200012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21000200010101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000200010107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15825386 + ... + 17100971.

It is an arithmetic number, because the mean of its divisors is an integer number (1435457503368).

Almost surely, 2^{21000200010101} is an apocalyptic number.

It is an amenable number.

21000200010101 is a deficient number, since it is larger than the sum of its proper divisors (1967120043787).

21000200010101 is a wasteful number, since it uses less digits than its factorization.

21000200010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32927132.

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

Adding to 21000200010101 its reverse (10101000200012), we get a palindrome (31101200210113).

The spelling of 21000200010101 in words is "twenty-one trillion, two hundred million, ten thousand, one hundred one".