2102012011 has 4 divisors (see below), whose sum is σ = 2293104024. Its totient is φ = 1910920000.

The previous prime is 2102011981. The next prime is 2102012027. The reversal of 2102012011 is 1102102012.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2102012011 - 2⁵ = 2102011979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102012041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95545990 + ... + 95546011.

It is an arithmetic number, because the mean of its divisors is an integer number (573276006).

Almost surely, 2^2102012011 is an apocalyptic number.

2102012011 is a deficient number, since it is larger than the sum of its proper divisors (191092013).

2102012011 is a wasteful number, since it uses less digits than its factorization.

2102012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191092012.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2102012011 is about 45847.7045335969. The cubic root of 2102012011 is about 1280.9880089467.

Adding to 2102012011 its reverse (1102102012), we get a palindrome (3204114023).

Subtracting from 2102012011 its reverse (1102102012), we obtain a palindrome (999909999).

It can be divided in two parts, 210201 and 2011, that added together give a palindrome (212212).

The spelling of 2102012011 in words is "two billion, one hundred two million, twelve thousand, eleven".