103212121099 has 2 divisors, whose sum is σ = 103212121100. Its totient is φ = 103212121098.

The previous prime is 103212121093. The next prime is 103212121123. The reversal of 103212121099 is 990121212301.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103212121099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103212121099.

It is not a weakly prime, because it can be changed into another prime (103212121093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51606060549 + 51606060550.

It is an arithmetic number, because the mean of its divisors is an integer number (51606060550).

Almost surely, 2^103212121099 is an apocalyptic number.

103212121099 is a deficient number, since it is larger than the sum of its proper divisors (1).

103212121099 is an equidigital number, since it uses as much as digits as its factorization.

103212121099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 103212121099 in words is "one hundred three billion, two hundred twelve million, one hundred twenty-one thousand, ninety-nine".