1202011002120 has 128 divisors (see below), whose sum is σ = 3653464227840. Its totient is φ = 316346607360.

The previous prime is 1202011002109. The next prime is 1202011002121. The reversal of 1202011002120 is 212001102021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1202011002096 and 1202011002105.

It is not an unprimeable number, because it can be changed into a prime (1202011002121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2704369 + ... + 3117311.

It is an arithmetic number, because the mean of its divisors is an integer number (28542689280).

Almost surely, 2^{1202011002120} is an apocalyptic number.

1202011002120 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 1202011002120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1826732113920).

1202011002120 is an abundant number, since it is smaller than the sum of its proper divisors (2451453225720).

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

1202011002120 is a wasteful number, since it uses less digits than its factorization.

1202011002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413275 (or 413271 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1202011002120 its reverse (212001102021), we get a palindrome (1414012104141).

Subtracting from 1202011002120 its reverse (212001102021), we obtain a palindrome (990009900099).

The spelling of 1202011002120 in words is "one trillion, two hundred two billion, eleven million, two thousand, one hundred twenty".