2101021011111 has 16 divisors (see below), whose sum is σ = 3056170359168. Its totient is φ = 1273287818400.

The previous prime is 2101021011101. The next prime is 2101021011143. The reversal of 2101021011111 is 1111101201012.

It is not a de Polignac number, because 2101021011111 - 2⁵ = 2101021011079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101021011101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 718320 + ... + 2172101.

It is an arithmetic number, because the mean of its divisors is an integer number (191010647448).

Almost surely, 2^{2101021011111} is an apocalyptic number.

2101021011111 is a deficient number, since it is larger than the sum of its proper divisors (955149348057).

2101021011111 is a wasteful number, since it uses less digits than its factorization.

2101021011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2912462.

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

Adding to 2101021011111 its reverse (1111101201012), we get a palindrome (3212122212123).

The spelling of 2101021011111 in words is "two trillion, one hundred one billion, twenty-one million, eleven thousand, one hundred eleven".