1201220001120 has 48 divisors (see below), whose sum is σ = 3783843005040. Its totient is φ = 320325333504.

The previous prime is 1201220001089. The next prime is 1201220001203. The reversal of 1201220001120 is 211000221021.

It is a tau number, because it is divible by the number of its divisors (48).

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 = 1201220001096 and 1201220001105.

It is a congruent number.

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, 1251270355 + ... + 1251271314.

It is an arithmetic number, because the mean of its divisors is an integer number (78830062605).

Almost surely, 2^{1201220001120} is an apocalyptic number.

1201220001120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201220001120 is an abundant number, since it is smaller than the sum of its proper divisors (2582623003920).

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

1201220001120 is a wasteful number, since it uses less digits than its factorization.

1201220001120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502541687 (or 2502541679 counting only the distinct ones).

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

Adding to 1201220001120 its reverse (211000221021), we get a palindrome (1412220222141).

The spelling of 1201220001120 in words is "one trillion, two hundred one billion, two hundred twenty million, one thousand, one hundred twenty".