1201032203100 has 144 divisors (see below), whose sum is σ = 3486987401856. Its totient is φ = 319171104000.

The previous prime is 1201032203099. The next prime is 1201032203113. The reversal of 1201032203100 is 13022301021.

It is a super-2 number, since 2×1201032203100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1201032203100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111500715 + ... + 111511485.

Almost surely, 2^{1201032203100} is an apocalyptic number.

1201032203100 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 1201032203100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1743493700928).

1201032203100 is an abundant number, since it is smaller than the sum of its proper divisors (2285955198756).

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

1201032203100 is a wasteful number, since it uses less digits than its factorization.

1201032203100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12036 (or 12029 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1201032203100 its reverse (13022301021), we get a palindrome (1214054504121).

The spelling of 1201032203100 in words is "one trillion, two hundred one billion, thirty-two million, two hundred three thousand, one hundred".