1012200031320 has 32 divisors (see below), whose sum is σ = 3036600094320. Its totient is φ = 269920008320.

The previous prime is 1012200031307. The next prime is 1012200031333. The reversal of 1012200031320 is 231300022101.

It is an interprime number because it is at equal distance from previous prime (1012200031307) and next prime (1012200031333).

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 1012200031320.

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, 4217500011 + ... + 4217500250.

Almost surely, 2^{1012200031320} is an apocalyptic number.

1012200031320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012200031320 is an abundant number, since it is smaller than the sum of its proper divisors (2024400063000).

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

1012200031320 is a wasteful number, since it uses less digits than its factorization.

1012200031320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8435000275 (or 8435000271 counting only the distinct ones).

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

Adding to 1012200031320 its reverse (231300022101), we get a palindrome (1243500053421).

The spelling of 1012200031320 in words is "one trillion, twelve billion, two hundred million, thirty-one thousand, three hundred twenty".