2011020101111 has 4 divisors (see below), whose sum is σ = 2298308686992. Its totient is φ = 1723731515232.

The previous prime is 2011020101039. The next prime is 2011020101117. The reversal of 2011020101111 is 1111010201102.

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

It is a cyclic number.

It is not a de Polignac number, because 2011020101111 - 2³⁸ = 1736142194167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011020101092 and 2011020101101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011020101117) 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, 143644292930 + ... + 143644292943.

It is an arithmetic number, because the mean of its divisors is an integer number (574577171748).

Almost surely, 2^{2011020101111} is an apocalyptic number.

2011020101111 is a deficient number, since it is larger than the sum of its proper divisors (287288585881).

2011020101111 is an equidigital number, since it uses as much as digits as its factorization.

2011020101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287288585880.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 2011020101111 its reverse (1111010201102), we get a palindrome (3122030302213).

Subtracting from 2011020101111 its reverse (1111010201102), we obtain a palindrome (900009900009).

The spelling of 2011020101111 in words is "two trillion, eleven billion, twenty million, one hundred one thousand, one hundred eleven".