1210120012240 has 160 divisors (see below), whose sum is σ = 3008127467520. Its totient is φ = 451379630592.

The previous prime is 1210120012223. The next prime is 1210120012243. The reversal of 1210120012240 is 422100210121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210120012243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159579489 + ... + 159587071.

It is an arithmetic number, because the mean of its divisors is an integer number (18800796672).

Almost surely, 2^{1210120012240} is an apocalyptic number.

1210120012240 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 1210120012240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1504063733760).

1210120012240 is an abundant number, since it is smaller than the sum of its proper divisors (1798007455280).

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

1210120012240 is a wasteful number, since it uses less digits than its factorization.

1210120012240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9249 (or 9243 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1210120012240 its reverse (422100210121), we get a palindrome (1632220222361).

The spelling of 1210120012240 in words is "one trillion, two hundred ten billion, one hundred twenty million, twelve thousand, two hundred forty".