201121030320 has 160 divisors (see below), whose sum is σ = 718154416128. Its totient is φ = 45608500224.

The previous prime is 201121030307. The next prime is 201121030339. The reversal of 201121030320 is 23030121102.

It is a super-3 number, since 3×201121030320³ (a number of 35 digits) contains 333 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 201121030320.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257959 + ... + 684678.

Almost surely, 2^201121030320 is an apocalyptic number.

201121030320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201121030320 is an abundant number, since it is smaller than the sum of its proper divisors (517033385808).

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

201121030320 is a wasteful number, since it uses less digits than its factorization.

201121030320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942787 (or 942781 counting only the distinct ones).

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

Adding to 201121030320 its reverse (23030121102), we get a palindrome (224151151422).

The spelling of 201121030320 in words is "two hundred one billion, one hundred twenty-one million, thirty thousand, three hundred twenty".