2101123032011 has 4 divisors (see below), whose sum is σ = 2130716314224. Its totient is φ = 2071529749800.

The previous prime is 2101123031999. The next prime is 2101123032023. The reversal of 2101123032011 is 1102303211012.

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

It is an interprime number because it is at equal distance from previous prime (2101123031999) and next prime (2101123032023).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101123032011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101123032511) 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, 14796641000 + ... + 14796641141.

It is an arithmetic number, because the mean of its divisors is an integer number (532679078556).

Almost surely, 2^{2101123032011} is an apocalyptic number.

2101123032011 is a deficient number, since it is larger than the sum of its proper divisors (29593282213).

2101123032011 is an equidigital number, since it uses as much as digits as its factorization.

2101123032011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29593282212.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2101123032011 its reverse (1102303211012), we get a palindrome (3203426243023).

The spelling of 2101123032011 in words is "two trillion, one hundred one billion, one hundred twenty-three million, thirty-two thousand, eleven".