220451101 has 4 divisors (see below), whose sum is σ = 237408892. Its totient is φ = 203493312.

The previous prime is 220451093. The next prime is 220451111. The reversal of 220451101 is 101154022.

220451101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86007076 + 134444025 = 9274^2 + 11595^2 .

It is a cyclic number.

It is not a de Polignac number, because 220451101 - 2³ = 220451093 is a prime.

It is a super-2 number, since 2×220451101² = 97197375864224402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220451111) 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, 8478876 + ... + 8478901.

It is an arithmetic number, because the mean of its divisors is an integer number (59352223).

Almost surely, 2^220451101 is an apocalyptic number.

It is an amenable number.

220451101 is a deficient number, since it is larger than the sum of its proper divisors (16957791).

220451101 is a wasteful number, since it uses less digits than its factorization.

220451101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16957790.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 220451101 is about 14847.5957986470. The cubic root of 220451101 is about 604.0933997706.

The spelling of 220451101 in words is "two hundred twenty million, four hundred fifty-one thousand, one hundred one".