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12420303331213 = 192911432245289
BaseRepresentation
bin1011010010111101001111…
…0001001001111110001101
31121222100222021221120020101
42310233103301021332031
53111443240123044323
642225450353051101
72421223460253001
oct264572361117615
947870867846211
1012420303331213
113a5946a485478
12148717a556a91
136c12ca4cb97b
1430d208466701
15168132000dad
hexb4bd3c49f8d

12420303331213 has 8 divisors (see below), whose sum is σ = 13074054235200. Its totient is φ = 11766557500128.

The previous prime is 12420303331201. The next prime is 12420303331237. The reversal of 12420303331213 is 31213330302421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12420303331213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420303331913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4409073 + ... + 6654361.

It is an arithmetic number, because the mean of its divisors is an integer number (1634256779400).

Almost surely, 212420303331213 is an apocalyptic number.

It is an amenable number.

12420303331213 is a deficient number, since it is larger than the sum of its proper divisors (653750903987).

12420303331213 is a wasteful number, since it uses less digits than its factorization.

12420303331213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536451.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 12420303331213 its reverse (31213330302421), we get a palindrome (43633633633634).

The spelling of 12420303331213 in words is "twelve trillion, four hundred twenty billion, three hundred three million, three hundred thirty-one thousand, two hundred thirteen".

Divisors: 1 19 291143 2245289 5531717 42660491 653700175327 12420303331213