10001121212012 has 48 divisors (see below), whose sum is σ = 20872305108480. Its totient is φ = 4099759944192.

The previous prime is 10001121211979. The next prime is 10001121212029. The reversal of 10001121212012 is 21021212110001.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43347863 + ... + 43577969.

It is an arithmetic number, because the mean of its divisors is an integer number (434839689760).

Almost surely, 2^{10001121212012} is an apocalyptic number.

It is an amenable number.

10001121212012 is an abundant number, since it is smaller than the sum of its proper divisors (10871183896468).

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

10001121212012 is a wasteful number, since it uses less digits than its factorization.

10001121212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297630 (or 297628 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10001121212012 its reverse (21021212110001), we get a palindrome (31022333322013).

The spelling of 10001121212012 in words is "ten trillion, one billion, one hundred twenty-one million, two hundred twelve thousand, twelve".