401256211 has 4 divisors (see below), whose sum is σ = 401680872. Its totient is φ = 400831552.

The previous prime is 401256203. The next prime is 401256221. The reversal of 401256211 is 112652104.

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 401256211 - 2³ = 401256203 is a prime.

It is a super-2 number, since 2×401256211² = 322013093732153042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401256221) 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, 210910 + ... + 212803.

It is an arithmetic number, because the mean of its divisors is an integer number (100420218).

Almost surely, 2^401256211 is an apocalyptic number.

401256211 is a deficient number, since it is larger than the sum of its proper divisors (424661).

401256211 is an equidigital number, since it uses as much as digits as its factorization.

401256211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424660.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 401256211 is about 20031.3806563602. The cubic root of 401256211 is about 737.5768138320.

The spelling of 401256211 in words is "four hundred one million, two hundred fifty-six thousand, two hundred eleven".