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121369747298 = 22463432
BaseRepresentation
bin111000100001000110…
…0110101111101100010
3102121021110120222112212
41301002030311331202
53442031123403143
6131431222522122
711524440554522
oct1610214657542
9377243528485
10121369747298
1147522070588
121b632596342
13b5a2c02b27
145c35221682
153255371918
hex1c42335f62

121369747298 has 6 divisors (see below), whose sum is σ = 182055359979. Its totient is φ = 60684627306.

The previous prime is 121369747297. The next prime is 121369747307. The reversal of 121369747298 is 892747963121.

It can be written as a sum of positive squares in only one way, i.e., 60684873649 + 60684873649 = 246343^2 + 246343^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=246343.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121369747297) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 369515 + ... + 615857.

Almost surely, 2121369747298 is an apocalyptic number.

121369747298 is a deficient number, since it is larger than the sum of its proper divisors (60685612681).

121369747298 is an frugal number, since it uses more digits than its factorization.

121369747298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492688 (or 246345 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 59.

The spelling of 121369747298 in words is "one hundred twenty-one billion, three hundred sixty-nine million, seven hundred forty-seven thousand, two hundred ninety-eight".

Divisors: 1 2 246343 492686 60684873649 121369747298