101312421 has 8 divisors (see below), whose sum is σ = 154380864. Its totient is φ = 57892800.

The previous prime is 101312411. The next prime is 101312423. The reversal of 101312421 is 124213101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101312421 - 2¹⁵ = 101279653 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 101312421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101312423) 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, 2412180 + ... + 2412221.

It is an arithmetic number, because the mean of its divisors is an integer number (19297608).

Almost surely, 2^101312421 is an apocalyptic number.

It is an amenable number.

101312421 is a deficient number, since it is larger than the sum of its proper divisors (53068443).

101312421 is an equidigital number, since it uses as much as digits as its factorization.

101312421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4824411.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 101312421 is about 10065.4071452674. The cubic root of 101312421 is about 466.1806372341.

Adding to 101312421 its reverse (124213101), we get a palindrome (225525522).

The spelling of 101312421 in words is "one hundred one million, three hundred twelve thousand, four hundred twenty-one".