21202110010 has 16 divisors (see below), whose sum is σ = 39823094016. Its totient is φ = 8112111568.

The previous prime is 21202109959. The next prime is 21202110019. The reversal of 21202110010 is 1001120212.

It is a super-2 number, since 2×21202110010² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (21202110019) 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, 46091314 + ... + 46091773.

It is an arithmetic number, because the mean of its divisors is an integer number (2488943376).

Almost surely, 2^21202110010 is an apocalyptic number.

21202110010 is a deficient number, since it is larger than the sum of its proper divisors (18620984006).

21202110010 is a wasteful number, since it uses less digits than its factorization.

21202110010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92183117.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21202110010 its reverse (1001120212), we get a palindrome (22203230222).

The spelling of 21202110010 in words is "twenty-one billion, two hundred two million, one hundred ten thousand, ten".