221054031 has 12 divisors (see below), whose sum is σ = 348327720. Its totient is φ = 133972080.

The previous prime is 221054011. The next prime is 221054069. The reversal of 221054031 is 130450122.

It is not a de Polignac number, because 221054031 - 2⁹ = 221053519 is a prime.

It is a super-2 number, since 2×221054031² = 97729769242697922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221053995 and 221054013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221054011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1116336 + ... + 1116533.

It is an arithmetic number, because the mean of its divisors is an integer number (29027310).

Almost surely, 2^221054031 is an apocalyptic number.

221054031 is a deficient number, since it is larger than the sum of its proper divisors (127273689).

221054031 is a wasteful number, since it uses less digits than its factorization.

221054031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232886 (or 2232883 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 221054031 is about 14867.8858954459. The cubic root of 221054031 is about 604.6436268351.

The spelling of 221054031 in words is "two hundred twenty-one million, fifty-four thousand, thirty-one".