1012021001200 has 120 divisors (see below), whose sum is σ = 2652767171856. Its totient is φ = 367958784000.

The previous prime is 1012021001191. The next prime is 1012021001279. The reversal of 1012021001200 is 21001202101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59448690 + ... + 59465710.

Almost surely, 2^{1012021001200} is an apocalyptic number.

1012021001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012021001200 is an abundant number, since it is smaller than the sum of its proper divisors (1640746170656).

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

1012021001200 is a wasteful number, since it uses less digits than its factorization.

1012021001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30563 (or 30552 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1012021001200 its reverse (21001202101), we get a palindrome (1033022203301).

The spelling of 1012021001200 in words is "one trillion, twelve billion, twenty-one million, one thousand, two hundred".