1001211120992 has 48 divisors (see below), whose sum is σ = 2056948356960. Its totient is φ = 478813919232.

The previous prime is 1001211120979. The next prime is 1001211120997. The reversal of 1001211120992 is 2990211121001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001211120997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23834984 + ... + 23876952.

It is an arithmetic number, because the mean of its divisors is an integer number (42853090770).

Almost surely, 2^{1001211120992} is an apocalyptic number.

It is an amenable number.

1001211120992 is an abundant number, since it is smaller than the sum of its proper divisors (1055737235968).

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

1001211120992 is a wasteful number, since it uses less digits than its factorization.

1001211120992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74415 (or 74407 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 29.

Adding to 1001211120992 its reverse (2990211121001), we get a palindrome (3991422241993).

The spelling of 1001211120992 in words is "one trillion, one billion, two hundred eleven million, one hundred twenty thousand, nine hundred ninety-two".