220101001011 has 18 divisors (see below), whose sum is σ = 326748448572. Its totient is φ = 142768208880.

The previous prime is 220101000983. The next prime is 220101001027. The reversal of 220101001011 is 110100101022.

It is a happy number.

It is not a de Polignac number, because 220101001011 - 2⁵ = 220101000979 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 220101000984 and 220101001002.

It is not an unprimeable number, because it can be changed into a prime (220101001031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8919625 + ... + 8944266.

Almost surely, 2^220101001011 is an apocalyptic number.

220101001011 is a deficient number, since it is larger than the sum of its proper divisors (106647447561).

220101001011 is a wasteful number, since it uses less digits than its factorization.

220101001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17863971 (or 17863931 counting only the distinct ones).

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

Adding to 220101001011 its reverse (110100101022), we get a palindrome (330201102033).

The spelling of 220101001011 in words is "two hundred twenty billion, one hundred one million, one thousand, eleven".