10101121021111 has 4 divisors (see below), whose sum is σ = 10180657407232. Its totient is φ = 10021584634992.

The previous prime is 10101121021037. The next prime is 10101121021133. The reversal of 10101121021111 is 11112012110101.

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 10101121021111 - 2²⁹ = 10100584150199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10101121021091 and 10101121021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101121021151) 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, 39768192870 + ... + 39768193123.

It is an arithmetic number, because the mean of its divisors is an integer number (2545164351808).

Almost surely, 2^{10101121021111} is an apocalyptic number.

10101121021111 is a deficient number, since it is larger than the sum of its proper divisors (79536386121).

10101121021111 is an equidigital number, since it uses as much as digits as its factorization.

10101121021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79536386120.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 10101121021111 its reverse (11112012110101), we get a palindrome (21213133131212).

The spelling of 10101121021111 in words is "ten trillion, one hundred one billion, one hundred twenty-one million, twenty-one thousand, one hundred eleven".