11211111001023 has 16 divisors (see below), whose sum is σ = 15037153819776. Its totient is φ = 7429656759840.

The previous prime is 11211111000967. The next prime is 11211111001049. The reversal of 11211111001023 is 32010011111211.

It is not a de Polignac number, because 11211111001023 - 2⁶ = 11211111000959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11211111000993 and 11211111001011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211111005023) 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, 10184536 + ... + 11231517.

It is an arithmetic number, because the mean of its divisors is an integer number (939822113736).

Almost surely, 2^{11211111001023} is an apocalyptic number.

11211111001023 is a deficient number, since it is larger than the sum of its proper divisors (3826042818753).

11211111001023 is a wasteful number, since it uses less digits than its factorization.

11211111001023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21417094.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 11211111001023 its reverse (32010011111211), we get a palindrome (43221122112234).

The spelling of 11211111001023 in words is "eleven trillion, two hundred eleven billion, one hundred eleven million, one thousand, twenty-three".