220102101 has 12 divisors (see below), whose sum is σ = 318066060. Its totient is φ = 146669760.

The previous prime is 220102027. The next prime is 220102117. The reversal of 220102101 is 101201022.

It can be written as a sum of positive squares in 2 ways, for example, as 163175076 + 56927025 = 12774^2 + 7545^2 .

It is not a de Polignac number, because 220102101 - 2⁹ = 220101589 is a prime.

It is a super-2 number, since 2×220102101² = 96889869729228402, which contains 22 as substring.

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 (220102901) 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, 25071 + ... + 32691.

It is an arithmetic number, because the mean of its divisors is an integer number (26505505).

Almost surely, 2^220102101 is an apocalyptic number.

It is an amenable number.

220102101 is a deficient number, since it is larger than the sum of its proper divisors (97963959).

220102101 is a wasteful number, since it uses less digits than its factorization.

220102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10836 (or 10833 counting only the distinct ones).

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

The square root of 220102101 is about 14835.8383989581. The cubic root of 220102101 is about 603.7744477839.

Adding to 220102101 its reverse (101201022), we get a palindrome (321303123).

The spelling of 220102101 in words is "two hundred twenty million, one hundred two thousand, one hundred one".