21201122202010 has 32 divisors (see below), whose sum is σ = 38712686648832. Its totient is φ = 8358831556800.

The previous prime is 21201122201983. The next prime is 21201122202109. The reversal of 21201122202010 is 1020222110212.

It is a happy number.

It is a super-2 number, since 2×21201122202010² (a number of 27 digits) contains 22 as substring.

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, 46840264 + ... + 47290723.

It is an arithmetic number, because the mean of its divisors is an integer number (1209771457776).

Almost surely, 2^{21201122202010} is an apocalyptic number.

21201122202010 is a deficient number, since it is larger than the sum of its proper divisors (17511564446822).

21201122202010 is a wasteful number, since it uses less digits than its factorization.

21201122202010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94131318.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21201122202010 its reverse (1020222110212), we get a palindrome (22221344312222).

The spelling of 21201122202010 in words is "twenty-one trillion, two hundred one billion, one hundred twenty-two million, two hundred two thousand, ten".