1031201233220 has 24 divisors (see below), whose sum is σ = 2165621668224. Its totient is φ = 412461621216.

The previous prime is 1031201233187. The next prime is 1031201233229. The reversal of 1031201233220 is 223321021301.

It is a super-4 number, since 4×1031201233220⁴ (a number of 49 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1031201233192 and 1031201233201.

It is not an unprimeable number, because it can be changed into a prime (1031201233229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727214 + ... + 1609733.

It is an arithmetic number, because the mean of its divisors is an integer number (90234236176).

Almost surely, 2^{1031201233220} is an apocalyptic number.

1031201233220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031201233220 is an abundant number, since it is smaller than the sum of its proper divisors (1134420435004).

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

1031201233220 is a wasteful number, since it uses less digits than its factorization.

1031201233220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359019 (or 2359017 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1031201233220 its reverse (223321021301), we get a palindrome (1254522254521).

The spelling of 1031201233220 in words is "one trillion, thirty-one billion, two hundred one million, two hundred thirty-three thousand, two hundred twenty".