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102012222001 = 971105058931
BaseRepresentation
bin101111100000001100…
…1101111101000110001
3100202022101222210220111
41133000121233220301
53132410112101001
6114510323541321
710240646402644
oct1370031575061
9322271883814
10102012222001
113a299270298
121792b82a841
139809675b51
144d1a3bba5b
1529c0c13851
hex17c066fa31

102012222001 has 4 divisors (see below), whose sum is σ = 102117281904. Its totient is φ = 101907162100.

The previous prime is 102012221981. The next prime is 102012222019. The reversal of 102012222001 is 100222210201.

It is a happy number.

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: 100222210201 = 103973031167.

It is a cyclic number.

It is not a de Polignac number, because 102012222001 - 227 = 101878004273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102012222901) 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 3 ways as a sum of consecutive naturals, for example, 52528495 + ... + 52530436.

It is an arithmetic number, because the mean of its divisors is an integer number (25529320476).

Almost surely, 2102012222001 is an apocalyptic number.

It is an amenable number.

102012222001 is a deficient number, since it is larger than the sum of its proper divisors (105059903).

102012222001 is an equidigital number, since it uses as much as digits as its factorization.

102012222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105059902.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102012222001 its reverse (100222210201), we get a palindrome (202234432202).

The spelling of 102012222001 in words is "one hundred two billion, twelve million, two hundred twenty-two thousand, one".

Divisors: 1 971 105058931 102012222001