101144021 has 8 divisors (see below), whose sum is σ = 111252288. Its totient is φ = 91947900.

The previous prime is 101144003. The next prime is 101144023. The reversal of 101144021 is 120441101.

It is not a de Polignac number, because 101144021 - 2¹⁰ = 101142997 is a prime.

It is a super-2 number, since 2×101144021² = 20460225968096882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101143987 and 101144005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101144023) 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, 36665 + ... + 39326.

It is an arithmetic number, because the mean of its divisors is an integer number (13906536).

Almost surely, 2^101144021 is an apocalyptic number.

101144021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101144021 is a deficient number, since it is larger than the sum of its proper divisors (10108267).

101144021 is an frugal number, since it uses more digits than its factorization.

101144021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76024 (or 76002 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 101144021 is about 10057.0383811538. The cubic root of 101144021 is about 465.9222011501.

Adding to 101144021 its reverse (120441101), we get a palindrome (221585122).

The spelling of 101144021 in words is "one hundred one million, one hundred forty-four thousand, twenty-one".