1202021120 has 72 divisors (see below), whose sum is σ = 2890747440. Its totient is φ = 478883840.

The previous prime is 1202021113. The next prime is 1202021123. The reversal of 1202021120 is 211202021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1202021123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342575 + ... + 346065.

It is an arithmetic number, because the mean of its divisors is an integer number (40149270).

Almost surely, 2^1202021120 is an apocalyptic number.

1202021120 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 1202021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1445373720).

1202021120 is an abundant number, since it is smaller than the sum of its proper divisors (1688726320).

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

1202021120 is an equidigital number, since it uses as much as digits as its factorization.

1202021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3781 (or 3767 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1202021120 is about 34670.1762326066. The cubic root of 1202021120 is about 1063.2548346865.

Adding to 1202021120 its reverse (211202021), we get a palindrome (1413223141).

The spelling of 1202021120 in words is "one billion, two hundred two million, twenty-one thousand, one hundred twenty".