10121102111 has 4 divisors (see below), whose sum is σ = 10121431800. Its totient is φ = 10120772424.

The previous prime is 10121102041. The next prime is 10121102129. The reversal of 10121102111 is 11120112101.

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 10121102111 - 2²² = 10116907807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121102092 and 10121102101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121102171) 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, 113456 + ... + 181973.

It is an arithmetic number, because the mean of its divisors is an integer number (2530357950).

Almost surely, 2^10121102111 is an apocalyptic number.

10121102111 is a deficient number, since it is larger than the sum of its proper divisors (329689).

10121102111 is an equidigital number, since it uses as much as digits as its factorization.

10121102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329688.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10121102111 its reverse (11120112101), we get a palindrome (21241214212).

The spelling of 10121102111 in words is "ten billion, one hundred twenty-one million, one hundred two thousand, one hundred eleven".