101220101221 has 8 divisors (see below), whose sum is σ = 101561160960. Its totient is φ = 100879178928.

The previous prime is 101220101201. The next prime is 101220101233. The reversal of 101220101221 is 122101022101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101220101221 - 2⁵ = 101220101189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101220101201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1565680 + ... + 1629046.

It is an arithmetic number, because the mean of its divisors is an integer number (12695145120).

Almost surely, 2^101220101221 is an apocalyptic number.

It is an amenable number.

101220101221 is a deficient number, since it is larger than the sum of its proper divisors (341059739).

101220101221 is an equidigital number, since it uses as much as digits as its factorization.

101220101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68723.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 101220101221 its reverse (122101022101), we get a palindrome (223321123322).

The spelling of 101220101221 in words is "one hundred one billion, two hundred twenty million, one hundred one thousand, two hundred twenty-one".