1201120021120 has 64 divisors (see below), whose sum is σ = 2873201424840. Its totient is φ = 480151203840.

The previous prime is 1201120021103. The next prime is 1201120021133. The reversal of 1201120021120 is 211200211021.

It can be written as a sum of positive squares in 4 ways, for example, as 1191258736704 + 9861284416 = 1091448^2 + 99304^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 1201120021120.

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, 458554 + ... + 1616326.

Almost surely, 2^{1201120021120} is an apocalyptic number.

1201120021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201120021120 is an abundant number, since it is smaller than the sum of its proper divisors (1672081403720).

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

1201120021120 is a wasteful number, since it uses less digits than its factorization.

1201120021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159413 (or 1159401 counting only the distinct ones).

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

Adding to 1201120021120 its reverse (211200211021), we get a palindrome (1412320232141).

The spelling of 1201120021120 in words is "one trillion, two hundred one billion, one hundred twenty million, twenty-one thousand, one hundred twenty".