21202120200010 has 32 divisors (see below), whose sum is σ = 38199230733312. Its totient is φ = 8472981404160.

The previous prime is 21202120199993. The next prime is 21202120200017. The reversal of 21202120200010 is 1000202120212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21202120200017) 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, 53736250 + ... + 54129370.

It is an arithmetic number, because the mean of its divisors is an integer number (1193725960416).

Almost surely, 2^{21202120200010} is an apocalyptic number.

21202120200010 is a deficient number, since it is larger than the sum of its proper divisors (16997110533302).

21202120200010 is a wasteful number, since it uses less digits than its factorization.

21202120200010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398118.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21202120200010 its reverse (1000202120212), we get a palindrome (22202322320222).

The spelling of 21202120200010 in words is "twenty-one trillion, two hundred two billion, one hundred twenty million, two hundred thousand, ten".