1201221303030 has 240 divisors, whose sum is σ = 3758733681120. Its totient is φ = 274459352832.

The previous prime is 1201221303019. The next prime is 1201221303053. The reversal of 1201221303030 is 303031221021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1201221302994 and 1201221303012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 155938159 + ... + 155945861.

It is an arithmetic number, because the mean of its divisors is an integer number (15661390338).

Almost surely, 2^{1201221303030} is an apocalyptic number.

1201221303030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201221303030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1879366840560).

1201221303030 is an abundant number, since it is smaller than the sum of its proper divisors (2557512378090).

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

1201221303030 is a wasteful number, since it uses less digits than its factorization.

1201221303030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11665 (or 11649 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1201221303030 its reverse (303031221021), we get a palindrome (1504252524051).

The spelling of 1201221303030 in words is "one trillion, two hundred one billion, two hundred twenty-one million, three hundred three thousand, thirty".