10101111021011 has 4 divisors (see below), whose sum is σ = 10266703005024. Its totient is φ = 9935519037000.

The previous prime is 10101111020971. The next prime is 10101111021019. The reversal of 10101111021011 is 11012011110101.

It is a happy number.

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 10101111021011 - 2⁶ = 10101111020947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10101111020983 and 10101111021001.

It is not an unprimeable number, because it can be changed into a prime (10101111021019) 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, 82795991915 + ... + 82795992036.

It is an arithmetic number, because the mean of its divisors is an integer number (2566675751256).

Almost surely, 2^{10101111021011} is an apocalyptic number.

10101111021011 is a deficient number, since it is larger than the sum of its proper divisors (165591984013).

10101111021011 is an equidigital number, since it uses as much as digits as its factorization.

10101111021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165591984012.

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

Adding to 10101111021011 its reverse (11012011110101), we get a palindrome (21113122131112).

The spelling of 10101111021011 in words is "ten trillion, one hundred one billion, one hundred eleven million, twenty-one thousand, eleven".