101220301221 has 32 divisors (see below), whose sum is σ = 146080220160. Its totient is φ = 61973420544.

The previous prime is 101220301219. The next prime is 101220301241. The reversal of 101220301221 is 122103022101.

It is not a de Polignac number, because 101220301221 - 2¹ = 101220301219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101220301221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101220301241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16278105 + ... + 16284321.

It is an arithmetic number, because the mean of its divisors is an integer number (4565006880).

Almost surely, 2^101220301221 is an apocalyptic number.

It is an amenable number.

101220301221 is a deficient number, since it is larger than the sum of its proper divisors (44859918939).

101220301221 is a wasteful number, since it uses less digits than its factorization.

101220301221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8285.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 101220301221 its reverse (122103022101), we get a palindrome (223323323322).

The spelling of 101220301221 in words is "one hundred one billion, two hundred twenty million, three hundred one thousand, two hundred twenty-one".