1001021212112 has 80 divisors (see below), whose sum is σ = 1982448574992. Its totient is φ = 489543598080.

The previous prime is 1001021212111. The next prime is 1001021212127. The reversal of 1001021212112 is 2112121201001.

It can be written as a sum of positive squares in 8 ways, for example, as 226381833616 + 774639378496 = 475796^2 + 880136^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001021212111) 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, 188976248 + ... + 188981544.

Almost surely, 2^{1001021212112} is an apocalyptic number.

It is an amenable number.

1001021212112 is a deficient number, since it is larger than the sum of its proper divisors (981427362880).

1001021212112 is a wasteful number, since it uses less digits than its factorization.

1001021212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6696 (or 6690 counting only the distinct ones).

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

Adding to 1001021212112 its reverse (2112121201001), we get a palindrome (3113142413113).

The spelling of 1001021212112 in words is "one trillion, one billion, twenty-one million, two hundred twelve thousand, one hundred twelve".