1210002021120 has 144 divisors (see below), whose sum is σ = 3913361948160. Its totient is φ = 318582730752.

The previous prime is 1210002021061. The next prime is 1210002021139. The reversal of 1210002021120 is 211202000121.

It is a super-2 number, since 2×1210002021120² (a number of 25 digits) contains 22 as substring.

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 = 1210002021096 and 1210002021105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1690974 + ... + 2297693.

It is an arithmetic number, because the mean of its divisors is an integer number (27176124640).

Almost surely, 2^{1210002021120} is an apocalyptic number.

1210002021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210002021120 is an abundant number, since it is smaller than the sum of its proper divisors (2703359927040).

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

1210002021120 is an equidigital number, since it uses as much as digits as its factorization.

1210002021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3988770 (or 3988756 counting only the distinct ones).

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

Adding to 1210002021120 its reverse (211202000121), we get a palindrome (1421204021241).

The spelling of 1210002021120 in words is "one trillion, two hundred ten billion, two million, twenty-one thousand, one hundred twenty".