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121201 = 196379
BaseRepresentation
bin11101100101110001
320011020221
4131211301
512334301
62333041
71013233
oct354561
9204227
10121201
1183073
125a181
1343222
1432253
1525da1
hex1d971

121201 has 4 divisors (see below), whose sum is σ = 127600. Its totient is φ = 114804.

The previous prime is 121189. The next prime is 121229. The reversal of 121201 is 102121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121201 - 25 = 121169 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (121271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3171 + ... + 3208.

It is an arithmetic number, because the mean of its divisors is an integer number (31900).

2121201 is an apocalyptic number.

It is an amenable number.

121201 is a deficient number, since it is larger than the sum of its proper divisors (6399).

121201 is an equidigital number, since it uses as much as digits as its factorization.

121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6398.

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

The square root of 121201 is about 348.1393399201. The cubic root of 121201 is about 49.4882467079.

Adding to 121201 its reverse (102121), we get a palindrome (223322).

It can be divided in two parts, 12120 and 1, that added together give a palindrome (12121).

The spelling of 121201 in words is "one hundred twenty-one thousand, two hundred one", and thus it is an iban number.

Divisors: 1 19 6379 121201