11011111020102 has 32 divisors (see below), whose sum is σ = 22288049142912. Its totient is φ = 3626067803904.

The previous prime is 11011111020083. The next prime is 11011111020109. The reversal of 11011111020102 is 20102011111011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011111020109) 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, 24491478 + ... + 24937014.

It is an arithmetic number, because the mean of its divisors is an integer number (696501535716).

Almost surely, 2^{11011111020102} is an apocalyptic number.

11011111020102 is an abundant number, since it is smaller than the sum of its proper divisors (11276938122810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11011111020102 is a wasteful number, since it uses less digits than its factorization.

11011111020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495252.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11011111020102 its reverse (20102011111011), we get a palindrome (31113122131113).

Subtracting 11011111020102 from its reverse (20102011111011), we obtain a palindrome (9090900090909).

The spelling of 11011111020102 in words is "eleven trillion, eleven billion, one hundred eleven million, twenty thousand, one hundred two".