2021111101011 has 16 divisors (see below), whose sum is σ = 2743604629920. Its totient is φ = 1323231275520.

The previous prime is 2021111101007. The next prime is 2021111101057. The reversal of 2021111101011 is 1101011111202.

It is not a de Polignac number, because 2021111101011 - 2² = 2021111101007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021111101081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27311580 + ... + 27385481.

It is an arithmetic number, because the mean of its divisors is an integer number (171475289370).

Almost surely, 2^{2021111101011} is an apocalyptic number.

2021111101011 is a deficient number, since it is larger than the sum of its proper divisors (722493528909).

2021111101011 is a wasteful number, since it uses less digits than its factorization.

2021111101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54697286.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 2021111101011 its reverse (1101011111202), we get a palindrome (3122122212213).

The spelling of 2021111101011 in words is "two trillion, twenty-one billion, one hundred eleven million, one hundred one thousand, eleven".