10121020111 has 8 divisors (see below), whose sum is σ = 10753274880. Its totient is φ = 9498722328.

The previous prime is 10121020087. The next prime is 10121020127. The reversal of 10121020111 is 11102012101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10121020111 - 2¹⁵ = 10120987343 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 (10121020171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2487151 + ... + 2491216.

It is an arithmetic number, because the mean of its divisors is an integer number (1344159360).

Almost surely, 2^10121020111 is an apocalyptic number.

10121020111 is a deficient number, since it is larger than the sum of its proper divisors (632254769).

10121020111 is a wasteful number, since it uses less digits than its factorization.

10121020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4978493.

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

Adding to 10121020111 its reverse (11102012101), we get a palindrome (21223032212).

It can be divided in two parts, 10 and 121020111, that added together give a palindrome (121020121).

The spelling of 10121020111 in words is "ten billion, one hundred twenty-one million, twenty thousand, one hundred eleven".