1011111020101 has 64 divisors (see below), whose sum is σ = 1335659673600. Its totient is φ = 743036426496.

The previous prime is 1011111020057. The next prime is 1011111020147. The reversal of 1011111020101 is 1010201111101.

It is a de Polignac number, because none of the positive numbers 2^k-1011111020101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011111020401) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 152755570 + ... + 152762188.

It is an arithmetic number, because the mean of its divisors is an integer number (20869682400).

Almost surely, 2^{1011111020101} is an apocalyptic number.

It is an amenable number.

1011111020101 is a deficient number, since it is larger than the sum of its proper divisors (324548653499).

1011111020101 is a wasteful number, since it uses less digits than its factorization.

1011111020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8378.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 1011111020101 its reverse (1010201111101), we get a palindrome (2021312131202).

The spelling of 1011111020101 in words is "one trillion, eleven billion, one hundred eleven million, twenty thousand, one hundred one".