212102021029 has 2 divisors, whose sum is σ = 212102021030. Its totient is φ = 212102021028.

The previous prime is 212102020993. The next prime is 212102021051. The reversal of 212102021029 is 920120201212.

It is an a-pointer prime, because the next prime (212102021051) can be obtained adding 212102021029 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206363958529 + 5738062500 = 454273^2 + 75750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212102021029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212102021129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106051010514 + 106051010515.

It is an arithmetic number, because the mean of its divisors is an integer number (106051010515).

Almost surely, 2^212102021029 is an apocalyptic number.

It is an amenable number.

212102021029 is a deficient number, since it is larger than the sum of its proper divisors (1).

212102021029 is an equidigital number, since it uses as much as digits as its factorization.

212102021029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 212102021029 in words is "two hundred twelve billion, one hundred two million, twenty-one thousand, twenty-nine".