101101021 has 4 divisors (see below), whose sum is σ = 115544032. Its totient is φ = 86658012.

The previous prime is 101101009. The next prime is 101101061. The reversal of 101101021 is 120101101.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120101101 = 23 ⋅5221787.

It is not a de Polignac number, because 101101021 - 2¹¹ = 101098973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7), and also a Moran number because the ratio is a prime number: 14443003 = 101101021 / (1 + 0 + 1 + 1 + 0 + 1 + 0 + 2 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101100995 and 101101013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101101061) 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, 7221495 + ... + 7221508.

It is an arithmetic number, because the mean of its divisors is an integer number (28886008).

Almost surely, 2^101101021 is an apocalyptic number.

It is an amenable number.

101101021 is a deficient number, since it is larger than the sum of its proper divisors (14443011).

101101021 is an equidigital number, since it uses as much as digits as its factorization.

101101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14443010.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 101101021 is about 10054.9003475917. The cubic root of 101101021 is about 465.8561649696.

Adding to 101101021 its reverse (120101101), we get a palindrome (221202122).

The spelling of 101101021 in words is "one hundred one million, one hundred one thousand, twenty-one".