101221020022220 has 24 divisors (see below), whose sum is σ = 242930448053664. Its totient is φ = 34704349721856.

The previous prime is 101221020022181. The next prime is 101221020022247. The reversal of 101221020022220 is 22220020122101.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361503642797 + ... + 361503643076.

It is an arithmetic number, because the mean of its divisors is an integer number (10122102002236).

Almost surely, 2^{101221020022220} is an apocalyptic number.

101221020022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101221020022220 is an abundant number, since it is smaller than the sum of its proper divisors (141709428031444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101221020022220 is a wasteful number, since it uses less digits than its factorization.

101221020022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723007285889 (or 723007285887 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 101221020022220 its reverse (22220020122101), we get a palindrome (123441040144321).

The spelling of 101221020022220 in words is "one hundred one trillion, two hundred twenty-one billion, twenty million, twenty-two thousand, two hundred twenty".