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121121012 = 2230280253
BaseRepresentation
bin1110011100000…
…10100011110100
322102220120210102
413032002203310
5222001333022
620004013232
73000340325
oct716024364
9272816712
10121121012
1162408011
1234691218
131c12a24c
141212c44c
15a977a92
hex73828f4

121121012 has 6 divisors (see below), whose sum is σ = 211961778. Its totient is φ = 60560504.

The previous prime is 121121003. The next prime is 121121083. The reversal of 121121012 is 210121121.

It can be written as a sum of positive squares in only one way, i.e., 83101456 + 38019556 = 9116^2 + 6166^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121120984 and 121121002.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15140123 + ... + 15140130.

It is an arithmetic number, because the mean of its divisors is an integer number (35326963).

Almost surely, 2121121012 is an apocalyptic number.

It is an amenable number.

121121012 is a deficient number, since it is larger than the sum of its proper divisors (90840766).

121121012 is a wasteful number, since it uses less digits than its factorization.

121121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30280257 (or 30280255 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 121121012 is about 11005.4991708691. The cubic root of 121121012 is about 494.7735753201.

Adding to 121121012 its reverse (210121121), we get a palindrome (331242133).

The spelling of 121121012 in words is "one hundred twenty-one million, one hundred twenty-one thousand, twelve".

Divisors: 1 2 4 30280253 60560506 121121012