2011021020111 has 64 divisors (see below), whose sum is σ = 2775862172160. Its totient is φ = 1294571182080.

The previous prime is 2011021020103. The next prime is 2011021020163. The reversal of 2011021020111 is 1110201201102.

It is not a de Polignac number, because 2011021020111 - 2³ = 2011021020103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011021020101) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1946776851 + ... + 1946777883.

It is an arithmetic number, because the mean of its divisors is an integer number (43372846440).

Almost surely, 2^{2011021020111} is an apocalyptic number.

2011021020111 is a deficient number, since it is larger than the sum of its proper divisors (764841152049).

2011021020111 is a wasteful number, since it uses less digits than its factorization.

2011021020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2011021020111 its reverse (1110201201102), we get a palindrome (3121222221213).

The spelling of 2011021020111 in words is "two trillion, eleven billion, twenty-one million, twenty thousand, one hundred eleven".