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122001001 is a prime number
BaseRepresentation
bin1110100010110…
…01011001101001
322111120021220121
413101121121221
5222213013001
620034523241
73010664023
oct721313151
9274507817
10122001001
1162959181
1234a36521
131c377955
14122bb013
15aa9d6a1
hex7459669

122001001 has 2 divisors, whose sum is σ = 122001002. Its totient is φ = 122001000.

The previous prime is 122000981. The next prime is 122001013. The reversal of 122001001 is 100100221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62726400 + 59274601 = 7920^2 + 7699^2 .

It is a cyclic number.

It is not a de Polignac number, because 122001001 - 27 = 122000873 is a prime.

122001001 is a modest number, since divided by 1001 gives 122 as remainder.

It is not a weakly prime, because it can be changed into another prime (122001041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61000500 + 61000501.

It is an arithmetic number, because the mean of its divisors is an integer number (61000501).

Almost surely, 2122001001 is an apocalyptic number.

It is an amenable number.

122001001 is a deficient number, since it is larger than the sum of its proper divisors (1).

122001001 is an equidigital number, since it uses as much as digits as its factorization.

122001001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 122001001 is about 11045.4063302352. The cubic root of 122001001 is about 495.9689228383.

Adding to 122001001 its reverse (100100221), we get a palindrome (222101222).

The spelling of 122001001 in words is "one hundred twenty-two million, one thousand, one".