121212101033 has 4 divisors (see below), whose sum is σ = 122461710420. Its totient is φ = 119962491648.

The previous prime is 121212101029. The next prime is 121212101051. The reversal of 121212101033 is 330101212121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38154590224 + 83057510809 = 195332^2 + 288197^2 .

It is a cyclic number.

It is not a de Polignac number, because 121212101033 - 2² = 121212101029 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121212101063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624804548 + ... + 624804741.

It is an arithmetic number, because the mean of its divisors is an integer number (30615427605).

Almost surely, 2^121212101033 is an apocalyptic number.

It is an amenable number.

121212101033 is a deficient number, since it is larger than the sum of its proper divisors (1249609387).

121212101033 is an equidigital number, since it uses as much as digits as its factorization.

121212101033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249609386.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121212101033 its reverse (330101212121), we get a palindrome (451313313154).

The spelling of 121212101033 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred one thousand, thirty-three".