101421211 has 4 divisors (see below), whose sum is σ = 102151000. Its totient is φ = 100691424.

The previous prime is 101421209. The next prime is 101421233. The reversal of 101421211 is 112124101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101421211 - 2¹ = 101421209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101421191 and 101421200.

It is not an unprimeable number, because it can be changed into a prime (101427211) 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, 364686 + ... + 364963.

It is an arithmetic number, because the mean of its divisors is an integer number (25537750).

Almost surely, 2^101421211 is an apocalyptic number.

101421211 is a deficient number, since it is larger than the sum of its proper divisors (729789).

101421211 is an equidigital number, since it uses as much as digits as its factorization.

101421211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729788.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 101421211 is about 10070.8098482694. The cubic root of 101421211 is about 466.3474402409.

Adding to 101421211 its reverse (112124101), we get a palindrome (213545312).

The spelling of 101421211 in words is "one hundred one million, four hundred twenty-one thousand, two hundred eleven".