101100020101221 has 4 divisors (see below), whose sum is σ = 134800026801632. Its totient is φ = 67400013400812.

The previous prime is 101100020101193. The next prime is 101100020101261. The reversal of 101100020101221 is 122101020001101.

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 de Polignac number, because none of the positive numbers 2^k-101100020101221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101100020101197 and 101100020101206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101100020101261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16850003350201 + ... + 16850003350206.

It is an arithmetic number, because the mean of its divisors is an integer number (33700006700408).

Almost surely, 2^{101100020101221} is an apocalyptic number.

It is an amenable number.

101100020101221 is a deficient number, since it is larger than the sum of its proper divisors (33700006700411).

101100020101221 is an equidigital number, since it uses as much as digits as its factorization.

101100020101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33700006700410.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101100020101221 its reverse (122101020001101), we get a palindrome (223201040102322).

The spelling of 101100020101221 in words is "one hundred one trillion, one hundred billion, twenty million, one hundred one thousand, two hundred twenty-one".