21202201222210 has 32 divisors (see below), whose sum is σ = 39397401446400. Its totient is φ = 8206815430080.

The previous prime is 21202201222199. The next prime is 21202201222211. The reversal of 21202201222210 is 1222210220212.

It is not an unprimeable number, because it can be changed into a prime (21202201222211) 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, 3206476 + ... + 7258504.

It is an arithmetic number, because the mean of its divisors is an integer number (1231168795200).

Almost surely, 2^{21202201222210} is an apocalyptic number.

21202201222210 is a deficient number, since it is larger than the sum of its proper divisors (18195200224190).

21202201222210 is a wasteful number, since it uses less digits than its factorization.

21202201222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4068946.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21202201222210 its reverse (1222210220212), we get a palindrome (22424411442422).

The spelling of 21202201222210 in words is "twenty-one trillion, two hundred two billion, two hundred one million, two hundred twenty-two thousand, two hundred ten".