21201000010 has 16 divisors (see below), whose sum is σ = 38225520000. Its totient is φ = 8466240016.

The previous prime is 21200999993. The next prime is 21201000011. The reversal of 21201000010 is 1000010212.

It is a junction number, because it is equal to n+sod(n) for n = 21200999957 and 21201000002.

It is not an unprimeable number, because it can be changed into a prime (21201000011) 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, 1763710 + ... + 1775689.

It is an arithmetic number, because the mean of its divisors is an integer number (2389095000).

Almost surely, 2^21201000010 is an apocalyptic number.

21201000010 is a deficient number, since it is larger than the sum of its proper divisors (17024519990).

21201000010 is a wasteful number, since it uses less digits than its factorization.

21201000010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3540005.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 21201000010 its reverse (1000010212), we get a palindrome (22201010222).

The spelling of 21201000010 in words is "twenty-one billion, two hundred one million, ten", and thus it is an aban number.