101143021 has 8 divisors (see below), whose sum is σ = 115655040. Its totient is φ = 86646768.

The previous prime is 101143019. The next prime is 101143057. The reversal of 101143021 is 120341101.

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 101143021 - 2¹ = 101143019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101142992 and 101143010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101143321) 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, 17880 + ... + 22846.

It is an arithmetic number, because the mean of its divisors is an integer number (14456880).

Almost surely, 2^101143021 is an apocalyptic number.

It is an amenable number.

101143021 is a deficient number, since it is larger than the sum of its proper divisors (14512019).

101143021 is an equidigital number, since it uses as much as digits as its factorization.

101143021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7883.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 101143021 is about 10056.9886646053. The cubic root of 101143021 is about 465.9206656376.

Adding to 101143021 its reverse (120341101), we get a palindrome (221484122).

The spelling of 101143021 in words is "one hundred one million, one hundred forty-three thousand, twenty-one".