401211213 has 32 divisors (see below), whose sum is σ = 590295552. Its totient is φ = 240883200.

The previous prime is 401211197. The next prime is 401211227. The reversal of 401211213 is 312112104.

It is not a de Polignac number, because 401211213 - 2⁴ = 401211197 is a prime.

It is a super-3 number, since 3×401211213³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401211192 and 401211201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401211913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 325308 + ... + 326538.

It is an arithmetic number, because the mean of its divisors is an integer number (18446736).

Almost surely, 2^401211213 is an apocalyptic number.

It is an amenable number.

401211213 is a deficient number, since it is larger than the sum of its proper divisors (189084339).

401211213 is a wasteful number, since it uses less digits than its factorization.

401211213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445.

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

The square root of 401211213 is about 20030.2574371874. The cubic root of 401211213 is about 737.5492414886.

Adding to 401211213 its reverse (312112104), we get a palindrome (713323317).

It can be divided in two parts, 4012 and 11213, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 401211213 in words is "four hundred one million, two hundred eleven thousand, two hundred thirteen".