101221111020101 has 4 divisors (see below), whose sum is σ = 101247896181600. Its totient is φ = 101194325858604.

The previous prime is 101221111020037. The next prime is 101221111020119. The reversal of 101221111020101 is 101020111122101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101221111020101 - 2⁶ = 101221111020037 is a prime.

It is a super-2 number, since 2×101221111020101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221111080101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13392575081 + ... + 13392582638.

It is an arithmetic number, because the mean of its divisors is an integer number (25311974045400).

Almost surely, 2^{101221111020101} is an apocalyptic number.

It is an amenable number.

101221111020101 is a deficient number, since it is larger than the sum of its proper divisors (26785161499).

101221111020101 is an equidigital number, since it uses as much as digits as its factorization.

101221111020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26785161498.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 101221111020101 its reverse (101020111122101), we get a palindrome (202241222142202).

The spelling of 101221111020101 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred eleven million, twenty thousand, one hundred one".