101221102201020 has 48 divisors (see below), whose sum is σ = 283426036333440. Its totient is φ = 26991631999296.

The previous prime is 101221102201019. The next prime is 101221102201039. The reversal of 101221102201020 is 20102201122101.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent 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, 18215482 + ... + 23113761.

It is an arithmetic number, because the mean of its divisors is an integer number (5904709090280).

Almost surely, 2^{101221102201020} is an apocalyptic number.

101221102201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101221102201020 is an abundant number, since it is smaller than the sum of its proper divisors (182204934132420).

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

101221102201020 is a wasteful number, since it uses less digits than its factorization.

101221102201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41370074 (or 41370072 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101221102201020 its reverse (20102201122101), we get a palindrome (121323303323121).

It can be divided in two parts, 10122110 and 2201020, that added together give a triangular number (12323130 = T₄₉₆₄).

The spelling of 101221102201020 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred two million, two hundred one thousand, twenty".