1211002201120 has 24 divisors (see below), whose sum is σ = 2860992700524. Its totient is φ = 484400880384.

The previous prime is 1211002201111. The next prime is 1211002201127. The reversal of 1211002201120 is 211022001121.

It can be written as a sum of positive squares in 2 ways, for example, as 996251519376 + 214750681744 = 998124^2 + 463412^2 .

It is a super-2 number, since 2×1211002201120² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1211002201120.

It is not an unprimeable number, because it can be changed into a prime (1211002201127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3784381719 + ... + 3784382038.

Almost surely, 2^{1211002201120} is an apocalyptic number.

1211002201120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211002201120 is an abundant number, since it is smaller than the sum of its proper divisors (1649990499404).

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

1211002201120 is an equidigital number, since it uses as much as digits as its factorization.

1211002201120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7568763772 (or 7568763764 counting only the distinct ones).

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

Adding to 1211002201120 its reverse (211022001121), we get a palindrome (1422024202241).

The spelling of 1211002201120 in words is "one trillion, two hundred eleven billion, two million, two hundred one thousand, one hundred twenty".