401254221 has 8 divisors (see below), whose sum is σ = 544073760. Its totient is φ = 262968752.

The previous prime is 401254207. The next prime is 401254241. The reversal of 401254221 is 122452104.

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

It is a cyclic number.

It is not a de Polignac number, because 401254221 - 2²¹ = 399157069 is a prime.

It is a super-2 number, since 2×401254221² = 322009899740633682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401254241) 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, 1133310 + ... + 1133663.

It is an arithmetic number, because the mean of its divisors is an integer number (68009220).

Almost surely, 2^401254221 is an apocalyptic number.

It is an amenable number.

401254221 is a deficient number, since it is larger than the sum of its proper divisors (142819539).

401254221 is a wasteful number, since it uses less digits than its factorization.

401254221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267035.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 401254221 is about 20031.3309842357. The cubic root of 401254221 is about 737.5755945111.

The spelling of 401254221 in words is "four hundred one million, two hundred fifty-four thousand, two hundred twenty-one".