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12227037377 = 19643528283
BaseRepresentation
bin10110110001100100…
…11100100011000001
31011120010022212002012
423120302130203001
5200020110144002
65341135502305
7611666050202
oct133062344301
934503285065
1012227037377
115204931175
122452987995
1311cb1c7479
1483dc3b5a9
154b866ad52
hex2d8c9c8c1

12227037377 has 4 divisors (see below), whose sum is σ = 12870565680. Its totient is φ = 11583509076.

The previous prime is 12227037373. The next prime is 12227037409. The reversal of 12227037377 is 77373072221.

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.

It is a cyclic number.

It is not a de Polignac number, because 12227037377 - 22 = 12227037373 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12227037371) 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, 321764123 + ... + 321764160.

It is an arithmetic number, because the mean of its divisors is an integer number (3217641420).

Almost surely, 212227037377 is an apocalyptic number.

It is an amenable number.

12227037377 is a deficient number, since it is larger than the sum of its proper divisors (643528303).

12227037377 is an equidigital number, since it uses as much as digits as its factorization.

12227037377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643528302.

The product of its (nonzero) digits is 172872, while the sum is 41.

The spelling of 12227037377 in words is "twelve billion, two hundred twenty-seven million, thirty-seven thousand, three hundred seventy-seven".

Divisors: 1 19 643528283 12227037377