1012200001002 has 16 divisors (see below), whose sum is σ = 2249333335680. Its totient is φ = 337400000316.

The previous prime is 1012200000989. The next prime is 1012200001003. The reversal of 1012200001002 is 2001000022101.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1012200001003) 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, 9372222178 + ... + 9372222285.

It is an arithmetic number, because the mean of its divisors is an integer number (140583333480).

Almost surely, 2^{1012200001002} is an apocalyptic number.

1012200001002 is an abundant number, since it is smaller than the sum of its proper divisors (1237133334678).

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

1012200001002 is a wasteful number, since it uses less digits than its factorization.

1012200001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18744444474 (or 18744444468 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1012200001002 its reverse (2001000022101), we get a palindrome (3013200023103).

The spelling of 1012200001002 in words is "one trillion, twelve billion, two hundred million, one thousand, two".