1212031302120 has 192 divisors, whose sum is σ = 4077424465920. Its totient is φ = 311996385792.

The previous prime is 1212031302113. The next prime is 1212031302161. The reversal of 1212031302120 is 212031302121.

1212031302120 is a `hidden beast` number, since 1 + 212 + 0 + 31 + 302 + 120 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1212031302093 and 1212031302102.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1333399 + ... + 2049881.

It is an arithmetic number, because the mean of its divisors is an integer number (21236585760).

Almost surely, 2^{1212031302120} is an apocalyptic number.

1212031302120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212031302120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2038712232960).

1212031302120 is an abundant number, since it is smaller than the sum of its proper divisors (2865393163800).

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

1212031302120 is a wasteful number, since it uses less digits than its factorization.

1212031302120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716664 (or 716657 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1212031302120 its reverse (212031302121), we get a palindrome (1424062604241).

Subtracting from 1212031302120 its reverse (212031302121), we obtain a palindrome (999999999999).

It can be divided in two parts, 1212031 and 302120, that added together give a palindrome (1514151).

The spelling of 1212031302120 in words is "one trillion, two hundred twelve billion, thirty-one million, three hundred two thousand, one hundred twenty".