1210121201120 has 144 divisors (see below), whose sum is σ = 3202496105760. Its totient is φ = 431406323712.

The previous prime is 1210121201119. The next prime is 1210121201239. The reversal of 1210121201120 is 211021210121.

It is a super-2 number, since 2×1210121201120² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1210121201095 and 1210121201104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12557 + ... + 1555763.

It is an arithmetic number, because the mean of its divisors is an integer number (22239556290).

Almost surely, 2^{1210121201120} is an apocalyptic number.

1210121201120 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 1210121201120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1601248052880).

1210121201120 is an abundant number, since it is smaller than the sum of its proper divisors (1992374904640).

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

1210121201120 is a wasteful number, since it uses less digits than its factorization.

1210121201120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543277 (or 1543256 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1210121201120 its reverse (211021210121), we get a palindrome (1421142411241).

Subtracting from 1210121201120 its reverse (211021210121), we obtain a palindrome (999099990999).

The spelling of 1210121201120 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, two hundred one thousand, one hundred twenty".