220011229 has 16 divisors (see below), whose sum is σ = 237864816. Its totient is φ = 202752000.

The previous prime is 220011223. The next prime is 220011251. The reversal of 220011229 is 922110022.

It can be written as a sum of positive squares in 8 ways, for example, as 84824100 + 135187129 = 9210^2 + 11627^2 .

It is a cyclic number.

It is not a de Polignac number, because 220011229 - 2¹⁹ = 219486941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220011223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165889 + ... + 167209.

It is an arithmetic number, because the mean of its divisors is an integer number (14866551).

Almost surely, 2^220011229 is an apocalyptic number.

It is an amenable number.

220011229 is a deficient number, since it is larger than the sum of its proper divisors (17853587).

220011229 is a wasteful number, since it uses less digits than its factorization.

220011229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 220011229 is about 14832.7754988741. The cubic root of 220011229 is about 603.6913443153.

The spelling of 220011229 in words is "two hundred twenty million, eleven thousand, two hundred twenty-nine".