21202100002010 has 32 divisors (see below), whose sum is σ = 40749192823680. Its totient is φ = 7923454152768.

The previous prime is 21202100002001. The next prime is 21202100002103. The reversal of 21202100002010 is 1020000120212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21202100001982 and 21202100002000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1071885965 + ... + 1071905744.

It is an arithmetic number, because the mean of its divisors is an integer number (1273412275740).

Almost surely, 2^{21202100002010} is an apocalyptic number.

21202100002010 is a deficient number, since it is larger than the sum of its proper divisors (19547092821670).

21202100002010 is a wasteful number, since it uses less digits than its factorization.

21202100002010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143791782.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21202100002010 its reverse (1020000120212), we get a palindrome (22222100122222).

The spelling of 21202100002010 in words is "twenty-one trillion, two hundred two billion, one hundred million, two thousand, ten".