11111010012101 has 4 divisors (see below), whose sum is σ = 11111110174572. Its totient is φ = 11110909849632.

The previous prime is 11111010011963. The next prime is 11111010012127. The reversal of 11111010012101 is 10121001011111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7161752061025 + 3949257951076 = 2676145^2 + 1987274^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111010012101 - 2¹⁴ = 11111009995717 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 (11111010012161) 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, 49914656 + ... + 50136761.

It is an arithmetic number, because the mean of its divisors is an integer number (2777777543643).

Almost surely, 2^{11111010012101} is an apocalyptic number.

It is an amenable number.

11111010012101 is a deficient number, since it is larger than the sum of its proper divisors (100162471).

11111010012101 is a wasteful number, since it uses less digits than its factorization.

11111010012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100162470.

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

Adding to 11111010012101 its reverse (10121001011111), we get a palindrome (21232011023212).

The spelling of 11111010012101 in words is "eleven trillion, one hundred eleven billion, ten million, twelve thousand, one hundred one".