10002100120988 has 12 divisors (see below), whose sum is σ = 18107250219240. Its totient is φ = 4828600058352.

The previous prime is 10002100120981. The next prime is 10002100121053. The reversal of 10002100120988 is 88902100120001.

It is a super-2 number, since 2×10002100120988² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002100120981) 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, 43112500406 + ... + 43112500637.

It is an arithmetic number, because the mean of its divisors is an integer number (1508937518270).

Almost surely, 2^{10002100120988} is an apocalyptic number.

It is an amenable number.

10002100120988 is a deficient number, since it is larger than the sum of its proper divisors (8105150098252).

10002100120988 is a wasteful number, since it uses less digits than its factorization.

10002100120988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86225001076 (or 86225001074 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 32.

Adding to 10002100120988 its reverse (88902100120001), we get a palindrome (98904200240989).

The spelling of 10002100120988 in words is "ten trillion, two billion, one hundred million, one hundred twenty thousand, nine hundred eighty-eight".