400220133 has 4 divisors (see below), whose sum is σ = 533626848. Its totient is φ = 266813420.

The previous prime is 400220131. The next prime is 400220167. The reversal of 400220133 is 331022004.

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 400220133 - 2¹ = 400220131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400220131) 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, 66703353 + ... + 66703358.

It is an arithmetic number, because the mean of its divisors is an integer number (133406712).

Almost surely, 2^400220133 is an apocalyptic number.

It is an amenable number.

400220133 is a deficient number, since it is larger than the sum of its proper divisors (133406715).

400220133 is a wasteful number, since it uses less digits than its factorization.

400220133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133406714.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 400220133 is about 20005.5025680436. The cubic root of 400220133 is about 736.9414377585.

Adding to 400220133 its reverse (331022004), we get a palindrome (731242137).

The spelling of 400220133 in words is "four hundred million, two hundred twenty thousand, one hundred thirty-three".