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121080069 = 33111723981
BaseRepresentation
bin1110011011110…
…00100100000101
322102211111122000
413031320210011
5221444030234
620003055513
73000110055
oct715704405
9272744560
10121080069
116238a280
1234671599
131c114716
141211b565
15a96a899
hex7378905

121080069 has 32 divisors (see below), whose sum is σ = 207204480. Its totient is φ = 69062400.

The previous prime is 121080067. The next prime is 121080083. The reversal of 121080069 is 960080121.

It is not a de Polignac number, because 121080069 - 21 = 121080067 is a prime.

It is a super-2 number, since 2×1210800692 = 29320766218089522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121080067) 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 31 ways as a sum of consecutive naturals, for example, 6942 + ... + 17039.

It is an arithmetic number, because the mean of its divisors is an integer number (6475140).

Almost surely, 2121080069 is an apocalyptic number.

It is an amenable number.

121080069 is a deficient number, since it is larger than the sum of its proper divisors (86124411).

121080069 is a wasteful number, since it uses less digits than its factorization.

121080069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24018 (or 24012 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 121080069 is about 11003.6388981100. The cubic root of 121080069 is about 494.7178189677.

The spelling of 121080069 in words is "one hundred twenty-one million, eighty thousand, sixty-nine".

Divisors: 1 3 9 11 17 27 33 51 99 153 187 297 459 561 1683 5049 23981 71943 215829 263791 407677 647487 791373 1223031 2374119 3669093 4484447 7122357 11007279 13453341 40360023 121080069