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11212432201 = 34913211811
BaseRepresentation
bin10100111000101000…
…00010001101001001
31001221102011120102201
422130110002031021
5140430340312301
65052333200201
7544566046465
oct123424021511
931842146381
1011212432201
1148341422a3
12220b030061
131098c45589
147851ab4a5
15459552201
hex29c502349

11212432201 has 4 divisors (see below), whose sum is σ = 11215647504. Its totient is φ = 11209216900.

The previous prime is 11212432199. The next prime is 11212432207. The reversal of 11212432201 is 10223421211.

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: 10223421211 = 31329787781.

It is a cyclic number.

It is not a de Polignac number, because 11212432201 - 21 = 11212432199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212432207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1602415 + ... + 1609396.

It is an arithmetic number, because the mean of its divisors is an integer number (2803911876).

Almost surely, 211212432201 is an apocalyptic number.

It is an amenable number.

11212432201 is a deficient number, since it is larger than the sum of its proper divisors (3215303).

11212432201 is an equidigital number, since it uses as much as digits as its factorization.

11212432201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3215302.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 11212432201 its reverse (10223421211), we get a palindrome (21435853412).

The spelling of 11212432201 in words is "eleven billion, two hundred twelve million, four hundred thirty-two thousand, two hundred one".

Divisors: 1 3491 3211811 11212432201