1001021111212 has 12 divisors (see below), whose sum is σ = 1759436670880. Its totient is φ = 498324919536.

The previous prime is 1001021111191. The next prime is 1001021111213. The reversal of 1001021111212 is 2121111201001.

It is a happy number.

1001021111212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1001021111192 and 1001021111201.

It is not an unprimeable number, because it can be changed into a prime (1001021111213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546407988 + ... + 546409819.

Almost surely, 2^{1001021111212} is an apocalyptic number.

It is an amenable number.

1001021111212 is a deficient number, since it is larger than the sum of its proper divisors (758415559668).

1001021111212 is a wasteful number, since it uses less digits than its factorization.

1001021111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092818040 (or 1092818038 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1001021111212 its reverse (2121111201001), we get a palindrome (3122132312213).

The spelling of 1001021111212 in words is "one trillion, one billion, twenty-one million, one hundred eleven thousand, two hundred twelve".