101121001111111 has 4 divisors (see below), whose sum is σ = 101132944074712. Its totient is φ = 101109058147512.

The previous prime is 101121001111027. The next prime is 101121001111129. The reversal of 101121001111111 is 111111100121101.

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 101121001111111 - 2²¹ = 101120999013959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101121001111091 and 101121001111100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101121001111181) 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, 5971469100 + ... + 5971486033.

It is an arithmetic number, because the mean of its divisors is an integer number (25283236018678).

Almost surely, 2^{101121001111111} is an apocalyptic number.

101121001111111 is a deficient number, since it is larger than the sum of its proper divisors (11942963601).

101121001111111 is an equidigital number, since it uses as much as digits as its factorization.

101121001111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11942963600.

The product of its (nonzero) digits is 2, while the sum is 13.

Adding to 101121001111111 its reverse (111111100121101), we get a palindrome (212232101232212).

The spelling of 101121001111111 in words is "one hundred one trillion, one hundred twenty-one billion, one million, one hundred eleven thousand, one hundred eleven".