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121012 = 2230253
BaseRepresentation
bin11101100010110100
320010222221
4131202310
512333022
62332124
71012543
oct354264
9203887
10121012
1182a11
125a044
1343108
143215a
1525cc7
hex1d8b4

121012 has 6 divisors (see below), whose sum is σ = 211778. Its totient is φ = 60504.

The previous prime is 121007. The next prime is 121013. The reversal of 121012 is 210121.

121012 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in only one way, i.e., 119716 + 1296 = 346^2 + 36^2 .

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 120986 and 121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121013) by changing a digit.

121012 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15123 + ... + 15130.

2121012 is an apocalyptic number.

It is an amenable number.

121012 is a deficient number, since it is larger than the sum of its proper divisors (90766).

121012 is a wasteful number, since it uses less digits than its factorization.

121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30257 (or 30255 counting only the distinct ones).

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

The square root of 121012 is about 347.8677909781. The cubic root of 121012 is about 49.4625094487.

Adding to 121012 its reverse (210121), we get a palindrome (331133).

It can be divided in two parts, 12 and 1012, that added together give a 10-th power (1024 = 210).

The spelling of 121012 in words is "one hundred twenty-one thousand, twelve", and thus it is an iban number.

Divisors: 1 2 4 30253 60506 121012