10101020111111 has 16 divisors (see below), whose sum is σ = 10348614359424. Its totient is φ = 9854836852224.

The previous prime is 10101020111099. The next prime is 10101020111131. The reversal of 10101020111111 is 11111102010101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10101020111111 - 2¹⁸ = 10101019848967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10101020111092 and 10101020111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101020111131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18601001 + ... + 19136333.

It is an arithmetic number, because the mean of its divisors is an integer number (646788397464).

Almost surely, 2^{10101020111111} is an apocalyptic number.

10101020111111 is a deficient number, since it is larger than the sum of its proper divisors (247594248313).

10101020111111 is an equidigital number, since it uses as much as digits as its factorization.

10101020111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536650.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 10101020111111 its reverse (11111102010101), we get a palindrome (21212122121212).

The spelling of 10101020111111 in words is "ten trillion, one hundred one billion, twenty million, one hundred eleven thousand, one hundred eleven".