11102121121 has 16 divisors (see below), whose sum is σ = 13954881024. Its totient is φ = 8597196864.

The previous prime is 11102121103. The next prime is 11102121139. The reversal of 11102121121 is 12112120111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11102121103) and next prime (11102121139).

It is a cyclic number.

It is not a de Polignac number, because 11102121121 - 2¹¹ = 11102119073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (11102121521) 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, 1293610 + ... + 1302163.

It is an arithmetic number, because the mean of its divisors is an integer number (872180064).

Almost surely, 2^11102121121 is an apocalyptic number.

It is an amenable number.

11102121121 is a deficient number, since it is larger than the sum of its proper divisors (2852759903).

11102121121 is a wasteful number, since it uses less digits than its factorization.

11102121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595840.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11102121121 its reverse (12112120111), we get a palindrome (23214241232).

The spelling of 11102121121 in words is "eleven billion, one hundred two million, one hundred twenty-one thousand, one hundred twenty-one".