121211010112104 has 288 divisors, whose sum is σ = 366956908500000. Its totient is φ = 36109794504960.

The previous prime is 121211010112081. The next prime is 121211010112139. The reversal of 121211010112104 is 401211010112121.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 291060222 + ... + 291476370.

Almost surely, 2^{121211010112104} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121211010112104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183478454250000).

121211010112104 is an abundant number, since it is smaller than the sum of its proper divisors (245745898387896).

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

121211010112104 is a wasteful number, since it uses less digits than its factorization.

121211010112104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416749 (or 416731 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121211010112104 its reverse (401211010112121), we get a palindrome (522422020224225).

The spelling of 121211010112104 in words is "one hundred twenty-one trillion, two hundred eleven billion, ten million, one hundred twelve thousand, one hundred four".