221453134 has 32 divisors (see below), whose sum is σ = 385511616. Its totient is φ = 93450240.

The previous prime is 221453129. The next prime is 221453149. The reversal of 221453134 is 431354122.

221453134 = T₄₄₄ + T₄₄₅ + ... + T₁₁₂₂.

It is a junction number, because it is equal to n+sod(n) for n = 221453099 and 221453108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424794 + ... + 425314.

It is an arithmetic number, because the mean of its divisors is an integer number (12047238).

Almost surely, 2^221453134 is an apocalyptic number.

221453134 is a deficient number, since it is larger than the sum of its proper divisors (164058482).

221453134 is a wasteful number, since it uses less digits than its factorization.

221453134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940.

The product of its digits is 2880, while the sum is 25.

The square root of 221453134 is about 14881.3014887811. The cubic root of 221453134 is about 605.0072935851.

The spelling of 221453134 in words is "two hundred twenty-one million, four hundred fifty-three thousand, one hundred thirty-four".