2020120011 has 36 divisors (see below), whose sum is σ = 3655465632. Its totient is φ = 1065554784.

The previous prime is 2020120007. The next prime is 2020120027. The reversal of 2020120011 is 1100210202.

It is not a de Polignac number, because 2020120011 - 2² = 2020120007 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 = 2020119975 and 2020120002.

It is not an unprimeable number, because it can be changed into a prime (2020120031) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 170451 + ... + 181916.

It is an arithmetic number, because the mean of its divisors is an integer number (101540712).

Almost surely, 2^2020120011 is an apocalyptic number.

2020120011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2020120011 is a deficient number, since it is larger than the sum of its proper divisors (1635345621).

2020120011 is a wasteful number, since it uses less digits than its factorization.

2020120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352400 (or 352390 counting only the distinct ones).

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

The square root of 2020120011 is about 44945.7451935108. The cubic root of 2020120011 is about 1264.1318984812.

Adding to 2020120011 its reverse (1100210202), we get a palindrome (3120330213).

The spelling of 2020120011 in words is "two billion, twenty million, one hundred twenty thousand, eleven".