121032101 has 2 divisors, whose sum is σ = 121032102. Its totient is φ = 121032100.
The previous prime is 121032089. The next prime is 121032133. The reversal of 121032101 is 101230121.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 70123876 + 50908225 = 8374^2 + 7135^2 .
It is a cyclic number.
It is not a de Polignac number, because 121032101 - 222 = 116837797 is a prime.
It is a Sophie Germain prime.
It is an alternating number because its digits alternate between odd and even.
It is a Curzon number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (121032161) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60516050 + 60516051.
It is an arithmetic number, because the mean of its divisors is an integer number (60516051).
Almost surely, 2121032101 is an apocalyptic number.
It is an amenable number.
121032101 is a deficient number, since it is larger than the sum of its proper divisors (1).
121032101 is an equidigital number, since it uses as much as digits as its factorization.
121032101 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 12, while the sum is 11.
The square root of 121032101 is about 11001.4590396002. The cubic root of 121032101 is about 494.6524799486.
Adding to 121032101 its reverse (101230121), we get a palindrome (222262222).
The spelling of 121032101 in words is "one hundred twenty-one million, thirty-two thousand, one hundred one".
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