220111010001 has 12 divisors (see below), whose sum is σ = 320909511312. Its totient is φ = 145369264536.

The previous prime is 220111009997. The next prime is 220111010033. The reversal of 220111010001 is 100010111022.

It is a happy number.

It is not a de Polignac number, because 220111010001 - 2² = 220111009997 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (220111010701) 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, 114283051 + ... + 114284976.

It is an arithmetic number, because the mean of its divisors is an integer number (26742459276).

Almost surely, 2^220111010001 is an apocalyptic number.

It is an amenable number.

220111010001 is a deficient number, since it is larger than the sum of its proper divisors (100798501311).

220111010001 is a wasteful number, since it uses less digits than its factorization.

220111010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228568140 (or 228568137 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 220111010001 its reverse (100010111022), we get a palindrome (320121121023).

The spelling of 220111010001 in words is "two hundred twenty billion, one hundred eleven million, ten thousand, one".