401213101 has 4 divisors (see below), whose sum is σ = 422329600. Its totient is φ = 380096604.

The previous prime is 401213083. The next prime is 401213117. The reversal of 401213101 is 101312104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 401213101 - 2⁵ = 401213069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401213161) 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, 10558221 + ... + 10558258.

It is an arithmetic number, because the mean of its divisors is an integer number (105582400).

Almost surely, 2^401213101 is an apocalyptic number.

It is an amenable number.

401213101 is a deficient number, since it is larger than the sum of its proper divisors (21116499).

401213101 is a wasteful number, since it uses less digits than its factorization.

401213101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21116498.

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

The square root of 401213101 is about 20030.3045658322. The cubic root of 401213101 is about 737.5503983944.

Adding to 401213101 its reverse (101312104), we get a palindrome (502525205).

The spelling of 401213101 in words is "four hundred one million, two hundred thirteen thousand, one hundred one".