1212001021120 has 56 divisors (see below), whose sum is σ = 2893134168000. Its totient is φ = 483615025152.

The previous prime is 1212001021117. The next prime is 1212001021157. The reversal of 1212001021120 is 211201002121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212001021120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4499320 + ... + 4761079.

Almost surely, 2^{1212001021120} is an apocalyptic number.

1212001021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212001021120 is an abundant number, since it is smaller than the sum of its proper divisors (1681133146880).

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

1212001021120 is an equidigital number, since it uses as much as digits as its factorization.

1212001021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9260825 (or 9260815 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1212001021120 its reverse (211201002121), we get a palindrome (1423202023241).

The spelling of 1212001021120 in words is "one trillion, two hundred twelve billion, one million, twenty-one thousand, one hundred twenty".