221053124 has 6 divisors (see below), whose sum is σ = 386842974. Its totient is φ = 110526560.

The previous prime is 221053123. The next prime is 221053169. The reversal of 221053124 is 421350122.

It can be written as a sum of positive squares in only one way, i.e., 139476100 + 81577024 = 11810^2 + 9032^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221053096 and 221053105.

It is not an unprimeable number, because it can be changed into a prime (221053121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27631637 + ... + 27631644.

It is an arithmetic number, because the mean of its divisors is an integer number (64473829).

Almost surely, 2^221053124 is an apocalyptic number.

It is an amenable number.

221053124 is a deficient number, since it is larger than the sum of its proper divisors (165789850).

221053124 is a wasteful number, since it uses less digits than its factorization.

221053124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55263285 (or 55263283 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 221053124 is about 14867.8553934318. The cubic root of 221053124 is about 604.6427998691.

The spelling of 221053124 in words is "two hundred twenty-one million, fifty-three thousand, one hundred twenty-four".