10122111992 has 8 divisors (see below), whose sum is σ = 18978960000. Its totient is φ = 5061055992.

The previous prime is 10122111991. The next prime is 10122112109. The reversal of 10122111992 is 29911122101.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122111991) 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 as a sum of consecutive naturals, namely, 632631992 + ... + 632632007.

It is an arithmetic number, because the mean of its divisors is an integer number (2372370000).

Almost surely, 2^10122111992 is an apocalyptic number.

It is an amenable number.

10122111992 is a deficient number, since it is larger than the sum of its proper divisors (8856848008).

10122111992 is a wasteful number, since it uses less digits than its factorization.

10122111992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265264005 (or 1265264001 counting only the distinct ones).

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

The spelling of 10122111992 in words is "ten billion, one hundred twenty-two million, one hundred eleven thousand, nine hundred ninety-two".