1202121110120 has 96 divisors (see below), whose sum is σ = 3154943105280. Its totient is φ = 411032522880.

The previous prime is 1202121110089. The next prime is 1202121110123. The reversal of 1202121110120 is 210111212021.

It is a super-2 number, since 2×1202121110120² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1202121110095 and 1202121110104.

It is not an unprimeable number, because it can be changed into a prime (1202121110123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116276 + ... + 1554915.

It is an arithmetic number, because the mean of its divisors is an integer number (32863990680).

Almost surely, 2^{1202121110120} is an apocalyptic number.

1202121110120 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 1202121110120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1577471552640).

1202121110120 is an abundant number, since it is smaller than the sum of its proper divisors (1952821995160).

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

1202121110120 is a wasteful number, since it uses less digits than its factorization.

1202121110120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671583 (or 1671572 counting only the distinct ones).

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

Adding to 1202121110120 its reverse (210111212021), we get a palindrome (1412232322141).

The spelling of 1202121110120 in words is "one trillion, two hundred two billion, one hundred twenty-one million, one hundred ten thousand, one hundred twenty".