11103100020121 has 16 divisors (see below), whose sum is σ = 11178200880000. Its totient is φ = 11028105906048.

The previous prime is 11103100020119. The next prime is 11103100020161. The reversal of 11103100020121 is 12102000130111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11103100020121 - 2¹ = 11103100020119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11103100020101) 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, 2131519765 + ... + 2131524973.

It is an arithmetic number, because the mean of its divisors is an integer number (698637555000).

Almost surely, 2^{11103100020121} is an apocalyptic number.

It is an amenable number.

11103100020121 is a deficient number, since it is larger than the sum of its proper divisors (75100859879).

11103100020121 is a wasteful number, since it uses less digits than its factorization.

11103100020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12768.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11103100020121 its reverse (12102000130111), we get a palindrome (23205100150232).

The spelling of 11103100020121 in words is "eleven trillion, one hundred three billion, one hundred million, twenty thousand, one hundred twenty-one".