22001220121210 has 32 divisors (see below), whose sum is σ = 43204990635072. Its totient is φ = 7999963169280.

The previous prime is 22001220121201. The next prime is 22001220121271. The reversal of 22001220121210 is 1212102210022.

It is a happy number.

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, 4164024 + ... + 7832083.

It is an arithmetic number, because the mean of its divisors is an integer number (1350155957346).

Almost surely, 2^{22001220121210} is an apocalyptic number.

22001220121210 is a deficient number, since it is larger than the sum of its proper divisors (21203770513862).

22001220121210 is a wasteful number, since it uses less digits than its factorization.

22001220121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12012798.

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

Adding to 22001220121210 its reverse (1212102210022), we get a palindrome (23213322331232).

The spelling of 22001220121210 in words is "twenty-two trillion, one billion, two hundred twenty million, one hundred twenty-one thousand, two hundred ten".