21200110010 has 8 divisors (see below), whose sum is σ = 38160198036. Its totient is φ = 8480044000.

The previous prime is 21200109977. The next prime is 21200110021. The reversal of 21200110010 is 1001100212.

It can be written as a sum of positive squares in 2 ways, for example, as 20291147809 + 908962201 = 142447^2 + 30149^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21200110010² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21200110010.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060005491 + ... + 1060005510.

Almost surely, 2^21200110010 is an apocalyptic number.

21200110010 is a deficient number, since it is larger than the sum of its proper divisors (16960088026).

21200110010 is a wasteful number, since it uses less digits than its factorization.

21200110010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120011008.

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

Adding to 21200110010 its reverse (1001100212), we get a palindrome (22201210222).

The spelling of 21200110010 in words is "twenty-one billion, two hundred million, one hundred ten thousand, ten".