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102001201223 = 179875670829
BaseRepresentation
bin101111011111110111…
…1101101000001000111
3100202021122020220020112
41132333233231001013
53132344301414343
6114505251423235
710240453622255
oct1367757550107
9322248226215
10102001201223
113a293023209
1217927bb4b1b
1398072b778c
144d18b4d5d5
1529bec88218
hex17bfbed047

102001201223 has 4 divisors (see below), whose sum is σ = 102006890040. Its totient is φ = 101995512408.

The previous prime is 102001201193. The next prime is 102001201231. The reversal of 102001201223 is 322102100201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102001201223 - 224 = 101984424007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102001201198 and 102001201207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001201243) 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, 2817428 + ... + 2853401.

It is an arithmetic number, because the mean of its divisors is an integer number (25501722510).

Almost surely, 2102001201223 is an apocalyptic number.

102001201223 is a deficient number, since it is larger than the sum of its proper divisors (5688817).

102001201223 is an equidigital number, since it uses as much as digits as its factorization.

102001201223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5688816.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 102001201223 its reverse (322102100201), we get a palindrome (424103301424).

The spelling of 102001201223 in words is "one hundred two billion, one million, two hundred one thousand, two hundred twenty-three".

Divisors: 1 17987 5670829 102001201223