1203121113020 has 24 divisors (see below), whose sum is σ = 2528132514768. Its totient is φ = 480947840000.

The previous prime is 1203121112939. The next prime is 1203121113041. The reversal of 1203121113020 is 203111213021.

It is a super-2 number, since 2×1203121113020² (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 1203121113020.

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, 18755006 + ... + 18819045.

It is an arithmetic number, because the mean of its divisors is an integer number (105338854782).

Almost surely, 2^{1203121113020} is an apocalyptic number.

1203121113020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203121113020 is an abundant number, since it is smaller than the sum of its proper divisors (1325011401748).

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

1203121113020 is a wasteful number, since it uses less digits than its factorization.

1203121113020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37575661 (or 37575659 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1203121113020 its reverse (203111213021), we get a palindrome (1406232326041).

The spelling of 1203121113020 in words is "one trillion, two hundred three billion, one hundred twenty-one million, one hundred thirteen thousand, twenty".