220210101 has 12 divisors (see below), whose sum is σ = 320404812. Its totient is φ = 145734336.

The previous prime is 220210097. The next prime is 220210103. The reversal of 220210101 is 101012022.

It can be written as a sum of positive squares in 2 ways, for example, as 94187025 + 126023076 = 9705^2 + 11226^2 .

It is not a de Polignac number, because 220210101 - 2² = 220210097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220210103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88066 + ... + 90531.

It is an arithmetic number, because the mean of its divisors is an integer number (26700401).

Almost surely, 2^220210101 is an apocalyptic number.

It is an amenable number.

220210101 is a deficient number, since it is larger than the sum of its proper divisors (100194711).

220210101 is a wasteful number, since it uses less digits than its factorization.

220210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178740 (or 178737 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 220210101 is about 14839.4777873077. The cubic root of 220210101 is about 603.8731852601.

Adding to 220210101 its reverse (101012022), we get a palindrome (321222123).

The spelling of 220210101 in words is "two hundred twenty million, two hundred ten thousand, one hundred one".