121004412102 has 144 divisors (see below), whose sum is σ = 309127854672. Its totient is φ = 34104913920.

The previous prime is 121004412097. The next prime is 121004412103. The reversal of 121004412102 is 201214400121.

121004412102 is a `hidden beast` number, since 1 + 2 + 10 + 0 + 441 + 210 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121004412103) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 28316238 + ... + 28320510.

It is an arithmetic number, because the mean of its divisors is an integer number (2146721213).

Almost surely, 2^121004412102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121004412102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154563927336).

121004412102 is an abundant number, since it is smaller than the sum of its proper divisors (188123442570).

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

121004412102 is a wasteful number, since it uses less digits than its factorization.

121004412102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4723 (or 4713 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121004412102 its reverse (201214400121), we get a palindrome (322218812223).

The spelling of 121004412102 in words is "one hundred twenty-one billion, four million, four hundred twelve thousand, one hundred two".