121210112111120 has 20 divisors (see below), whose sum is σ = 281813510658540. Its totient is φ = 48484044844416.

The previous prime is 121210112111117. The next prime is 121210112111161. The reversal of 121210112111120 is 21111211012121.

It can be written as a sum of positive squares in 2 ways, for example, as 58242966997264 + 62967145113856 = 7631708^2 + 7935184^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757563200615 + ... + 757563200774.

It is an arithmetic number, because the mean of its divisors is an integer number (14090675532927).

Almost surely, 2^{121210112111120} is an apocalyptic number.

121210112111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121210112111120 is an abundant number, since it is smaller than the sum of its proper divisors (160603398547420).

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

121210112111120 is a wasteful number, since it uses less digits than its factorization.

121210112111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515126401402 (or 1515126401396 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121210112111120 its reverse (21111211012121), we get a palindrome (142321323123241).

The spelling of 121210112111120 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred twelve million, one hundred eleven thousand, one hundred twenty".