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121220107026731 is a prime number
BaseRepresentation
bin11011100011111111000001…
…011010110100000100101011
3120220012112021200101221020122
4123203333001122310010223
5111342032234344323411
61105451425352513455
734350602153613326
oct3343770132640453
9526175250357218
10121220107026731
1135696182240069
12117193286ab88b
13528401262321b
1421d1127b7d7bd
15e0332e69d9db
hex6e3fc16b412b

121220107026731 has 2 divisors, whose sum is σ = 121220107026732. Its totient is φ = 121220107026730.

The previous prime is 121220107026727. The next prime is 121220107026737. The reversal of 121220107026731 is 137620701022121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121220107026731 - 22 = 121220107026727 is a prime.

It is a super-2 number, since 2×1212201070267312 (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121220107026691 and 121220107026700.

It is not a weakly prime, because it can be changed into another prime (121220107026737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610053513365 + 60610053513366.

It is an arithmetic number, because the mean of its divisors is an integer number (60610053513366).

Almost surely, 2121220107026731 is an apocalyptic number.

121220107026731 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220107026731 is an equidigital number, since it uses as much as digits as its factorization.

121220107026731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 35.

Adding to 121220107026731 its reverse (137620701022121), we get a palindrome (258840808048852).

The spelling of 121220107026731 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred seven million, twenty-six thousand, seven hundred thirty-one".