101020121100221 has 4 divisors (see below), whose sum is σ = 106336969579200. Its totient is φ = 95703272621244.

The previous prime is 101020121100211. The next prime is 101020121100247. The reversal of 101020121100221 is 122001121020101.

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 a de Polignac number, because none of the positive numbers 2^k-101020121100221 is a prime.

It is a super-2 number, since 2×101020121100221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101020121100196 and 101020121100205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101020121100211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2658424239461 + ... + 2658424239498.

It is an arithmetic number, because the mean of its divisors is an integer number (26584242394800).

Almost surely, 2^{101020121100221} is an apocalyptic number.

It is an amenable number.

101020121100221 is a deficient number, since it is larger than the sum of its proper divisors (5316848478979).

101020121100221 is an equidigital number, since it uses as much as digits as its factorization.

101020121100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5316848478978.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 101020121100221 its reverse (122001121020101), we get a palindrome (223021242120322).

The spelling of 101020121100221 in words is "one hundred one trillion, twenty billion, one hundred twenty-one million, one hundred thousand, two hundred twenty-one".