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121701055 = 5723171567
BaseRepresentation
bin1110100000100…
…00001010111111
322111000001110111
413100100022333
5222123413210
620024250451
73005304400
oct720201277
9274001414
10121701055
1162773893
1234910a27
131c2a1278
141223d9a7
15aa3e88a
hex74102bf

121701055 has 24 divisors (see below), whose sum is σ = 170529408. Its totient is φ = 83135808.

The previous prime is 121701053. The next prime is 121701067. The reversal of 121701055 is 550107121.

It is not a de Polignac number, because 121701055 - 21 = 121701053 is a prime.

It is a super-2 number, since 2×1217010552 = 29622293576226050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121701053) 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 23 ways as a sum of consecutive naturals, for example, 76882 + ... + 78448.

It is an arithmetic number, because the mean of its divisors is an integer number (7105392).

Almost surely, 2121701055 is an apocalyptic number.

121701055 is a deficient number, since it is larger than the sum of its proper divisors (48828353).

121701055 is a wasteful number, since it uses less digits than its factorization.

121701055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903 (or 1896 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 121701055 is about 11031.8201127466. The cubic root of 121701055 is about 495.5621338918.

Adding to 121701055 its reverse (550107121), we get a palindrome (671808176).

It can be divided in two parts, 12170 and 1055, that added together give a square (13225 = 1152).

The spelling of 121701055 in words is "one hundred twenty-one million, seven hundred one thousand, fifty-five".

Divisors: 1 5 7 35 49 245 317 1567 1585 2219 7835 10969 11095 15533 54845 76783 77665 383915 496739 2483695 3477173 17385865 24340211 121701055