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10122110993 = 18795386967
BaseRepresentation
bin10010110110101001…
…10010100000010001
3222010102112111220202
421123110302200101
5131212230022433
64352223544545
7505556344451
oct113324624021
928112474822
1010122110993
114324738895
121b65a5b155
13c540a31b7
146c046bd61
153e397dee8
hex25b532811

10122110993 has 4 divisors (see below), whose sum is σ = 10127499840. Its totient is φ = 10116722148.

The previous prime is 10122110983. The next prime is 10122111001. The reversal of 10122110993 is 39901122101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39901122101 = 311287132971.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10122110993 is a prime.

It is a super-2 number, since 2×101221109932 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10122110983) 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, 2691605 + ... + 2695362.

It is an arithmetic number, because the mean of its divisors is an integer number (2531874960).

Almost surely, 210122110993 is an apocalyptic number.

It is an amenable number.

10122110993 is a deficient number, since it is larger than the sum of its proper divisors (5388847).

10122110993 is an equidigital number, since it uses as much as digits as its factorization.

10122110993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5388846.

The product of its (nonzero) digits is 972, while the sum is 29.

The spelling of 10122110993 in words is "ten billion, one hundred twenty-two million, one hundred ten thousand, nine hundred ninety-three".

Divisors: 1 1879 5386967 10122110993