2111002020 has 48 divisors (see below), whose sum is σ = 6567563520. Its totient is φ = 562933728.

The previous prime is 2111002007. The next prime is 2111002073. The reversal of 2111002020 is 202001112.

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 = 2111001993 and 2111002011.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1954092 + ... + 1955171.

It is an arithmetic number, because the mean of its divisors is an integer number (136824240).

Almost surely, 2^2111002020 is an apocalyptic number.

2111002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111002020 is an abundant number, since it is smaller than the sum of its proper divisors (4456561500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2111002020 is a wasteful number, since it uses less digits than its factorization.

2111002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909281 (or 3909273 counting only the distinct ones).

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

The square root of 2111002020 is about 45945.6420131442. The cubic root of 2111002020 is about 1282.8116133468.

Adding to 2111002020 its reverse (202001112), we get a palindrome (2313003132).

The spelling of 2111002020 in words is "two billion, one hundred eleven million, two thousand, twenty".