121110000102 has 192 divisors, whose sum is σ = 335430426240. Its totient is φ = 30727268352.

The previous prime is 121110000091. The next prime is 121110000103. The reversal of 121110000102 is 201000011121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110000103) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5382708 + ... + 5405160.

It is an arithmetic number, because the mean of its divisors is an integer number (1747033470).

Almost surely, 2^121110000102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121110000102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167715213120).

121110000102 is an abundant number, since it is smaller than the sum of its proper divisors (214320426138).

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

121110000102 is a wasteful number, since it uses less digits than its factorization.

121110000102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22607 (or 22604 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 121110000102 its reverse (201000011121), we get a palindrome (322110011223).

The spelling of 121110000102 in words is "one hundred twenty-one billion, one hundred ten million, one hundred two", and thus it is an aban number.