12120011121210 has 64 divisors (see below), whose sum is σ = 30520418423040. Its totient is φ = 3074401059840.

The previous prime is 12120011121199. The next prime is 12120011121221. The reversal of 12120011121210 is 1212111002121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12120011121199) and next prime (12120011121221).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12120011121210.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48397855 + ... + 48647634.

It is an arithmetic number, because the mean of its divisors is an integer number (476881537860).

Almost surely, 2^{12120011121210} is an apocalyptic number.

12120011121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12120011121210 is an abundant number, since it is smaller than the sum of its proper divisors (18400407301830).

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

12120011121210 is a wasteful number, since it uses less digits than its factorization.

12120011121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97045703.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12120011121210 its reverse (1212111002121), we get a palindrome (13332122123331).

The spelling of 12120011121210 in words is "twelve trillion, one hundred twenty billion, eleven million, one hundred twenty-one thousand, two hundred ten".