220120011 has 20 divisors (see below), whose sum is σ = 329345544. Its totient is φ = 146512800.

The previous prime is 220120003. The next prime is 220120027. The reversal of 220120011 is 110021022.

It is not a de Polignac number, because 220120011 - 2³ = 220120003 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 = 220119975 and 220120002.

It is not an unprimeable number, because it can be changed into a prime (220120081) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 59856 + ... + 63426.

Almost surely, 2^220120011 is an apocalyptic number.

220120011 is a deficient number, since it is larger than the sum of its proper divisors (109225533).

220120011 is an equidigital number, since it uses as much as digits as its factorization.

220120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344 (or 4335 counting only the distinct ones).

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

The square root of 220120011 is about 14836.4419926073. The cubic root of 220120011 is about 603.7908239823.

Adding to 220120011 its reverse (110021022), we get a palindrome (330141033).

The spelling of 220120011 in words is "two hundred twenty million, one hundred twenty thousand, eleven".