11102121111021 has 16 divisors (see below), whose sum is σ = 15669393072960. Its totient is φ = 6980002364160.

The previous prime is 11102121111017. The next prime is 11102121111043. The reversal of 11102121111021 is 12011112120111.

It is not a de Polignac number, because 11102121111021 - 2² = 11102121111017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102121111001) 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, 1483840300 + ... + 1483847781.

It is an arithmetic number, because the mean of its divisors is an integer number (979337067060).

Almost surely, 2^{11102121111021} is an apocalyptic number.

It is an amenable number.

11102121111021 is a deficient number, since it is larger than the sum of its proper divisors (4567271961939).

11102121111021 is a wasteful number, since it uses less digits than its factorization.

11102121111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967688156.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11102121111021 its reverse (12011112120111), we get a palindrome (23113233231132).

The spelling of 11102121111021 in words is "eleven trillion, one hundred two billion, one hundred twenty-one million, one hundred eleven thousand, twenty-one".