21000013222210 has 32 divisors (see below), whose sum is σ = 42014434698432. Its totient is φ = 7492286018880.

The previous prime is 21000013222193. The next prime is 21000013222211. The reversal of 21000013222210 is 1222231000012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21000013222211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1801024464 + ... + 1801036123.

It is an arithmetic number, because the mean of its divisors is an integer number (1312951084326).

Almost surely, 2^{21000013222210} is an apocalyptic number.

21000013222210 is an abundant number, since it is smaller than the sum of its proper divisors (21014421476222).

21000013222210 is a wasteful number, since it uses less digits than its factorization.

21000013222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3602060658.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21000013222210 its reverse (1222231000012), we get a palindrome (22222244222222).

The spelling of 21000013222210 in words is "twenty-one trillion, thirteen million, two hundred twenty-two thousand, two hundred ten".