2101020001111 has 4 divisors (see below), whose sum is σ = 2152264391424. Its totient is φ = 2049775610800.

The previous prime is 2101020001079. The next prime is 2101020001133. The reversal of 2101020001111 is 1111000201012.

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 2101020001111 - 2⁵ = 2101020001079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101020002111) 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, 25622195095 + ... + 25622195176.

It is an arithmetic number, because the mean of its divisors is an integer number (538066097856).

Almost surely, 2^{2101020001111} is an apocalyptic number.

2101020001111 is a deficient number, since it is larger than the sum of its proper divisors (51244390313).

2101020001111 is an equidigital number, since it uses as much as digits as its factorization.

2101020001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51244390312.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 2101020001111 its reverse (1111000201012), we get a palindrome (3212020202123).

The spelling of 2101020001111 in words is "two trillion, one hundred one billion, twenty million, one thousand, one hundred eleven".