211212121121039 has 2 divisors, whose sum is σ = 211212121121040. Its totient is φ = 211212121121038.

The previous prime is 211212121120993. The next prime is 211212121121063. The reversal of 211212121121039 is 930121121212112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211212121121039 - 2¹² = 211212121116943 is a prime.

It is a super-2 number, since 2×211212121121039² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211212121123039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105606060560519 + 105606060560520.

It is an arithmetic number, because the mean of its divisors is an integer number (105606060560520).

Almost surely, 2^{211212121121039} is an apocalyptic number.

211212121121039 is a deficient number, since it is larger than the sum of its proper divisors (1).

211212121121039 is an equidigital number, since it uses as much as digits as its factorization.

211212121121039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 29.

The spelling of 211212121121039 in words is "two hundred eleven trillion, two hundred twelve billion, one hundred twenty-one million, one hundred twenty-one thousand, thirty-nine".