101201243 has 24 divisors (see below), whose sum is σ = 122153808. Its totient is φ = 82656000.

The previous prime is 101201227. The next prime is 101201249. The reversal of 101201243 is 342102101.

It is not a de Polignac number, because 101201243 - 2⁴ = 101201227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101201249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240173 + ... + 240593.

It is an arithmetic number, because the mean of its divisors is an integer number (5089742).

Almost surely, 2^101201243 is an apocalyptic number.

101201243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

101201243 is a deficient number, since it is larger than the sum of its proper divisors (20952565).

101201243 is a wasteful number, since it uses less digits than its factorization.

101201243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 101201243 is about 10059.8828522006. The cubic root of 101201243 is about 466.0100493943.

Adding to 101201243 its reverse (342102101), we get a palindrome (443303344).

The spelling of 101201243 in words is "one hundred one million, two hundred one thousand, two hundred forty-three".