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102220033 = 345729569
BaseRepresentation
bin1100001011111…
…00000100000001
321010100022112011
412011330010001
5202132020113
614050532521
72350566406
oct605740401
9233308464
10102220033
1152778473
122a297141
1318240136
14d80c2ad
158e9263d
hex617c101

102220033 has 4 divisors (see below), whose sum is σ = 102253060. Its totient is φ = 102187008.

The previous prime is 102220007. The next prime is 102220039. The reversal of 102220033 is 330022201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 330022201 = 439751759.

It can be written as a sum of positive squares in 2 ways, for example, as 21003889 + 81216144 = 4583^2 + 9012^2 .

It is a cyclic number.

It is not a de Polignac number, because 102220033 - 213 = 102211841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102219995 and 102220022.

It is not an unprimeable number, because it can be changed into a prime (102220039) 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, 11328 + ... + 18241.

It is an arithmetic number, because the mean of its divisors is an integer number (25563265).

Almost surely, 2102220033 is an apocalyptic number.

It is an amenable number.

102220033 is a deficient number, since it is larger than the sum of its proper divisors (33027).

102220033 is an equidigital number, since it uses as much as digits as its factorization.

102220033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33026.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 102220033 is about 10110.3923267102. The cubic root of 102220033 is about 467.5686009885.

Adding to 102220033 its reverse (330022201), we get a palindrome (432242234).

The spelling of 102220033 in words is "one hundred two million, two hundred twenty thousand, thirty-three".

Divisors: 1 3457 29569 102220033