10001220012012 has 48 divisors (see below), whose sum is σ = 23515761852800. Its totient is φ = 3308109327360.

The previous prime is 10001220012011. The next prime is 10001220012013. The reversal of 10001220012012 is 21021002210001.

It is an interprime number because it is at equal distance from previous prime (10001220012011) and next prime (10001220012013).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (10001220012011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1863564 + ... + 4845132.

Almost surely, 2^{10001220012012} is an apocalyptic number.

10001220012012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10001220012012 is an abundant number, since it is smaller than the sum of its proper divisors (13514541840788).

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

10001220012012 is a wasteful number, since it uses less digits than its factorization.

10001220012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983726 (or 2983724 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10001220012012 its reverse (21021002210001), we get a palindrome (31022222222013).

The spelling of 10001220012012 in words is "ten trillion, one billion, two hundred twenty million, twelve thousand, twelve".