212881129 has 2 divisors, whose sum is σ = 212881130. Its totient is φ = 212881128.

The previous prime is 212881117. The next prime is 212881181. The reversal of 212881129 is 921188212.

212881129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191767104 + 21114025 = 13848^2 + 4595^2 .

It is a cyclic number.

It is not a de Polignac number, because 212881129 - 2¹³ = 212872937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212881094 and 212881103.

It is not a weakly prime, because it can be changed into another prime (212881829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106440564 + 106440565.

It is an arithmetic number, because the mean of its divisors is an integer number (106440565).

Almost surely, 2^212881129 is an apocalyptic number.

It is an amenable number.

212881129 is a deficient number, since it is larger than the sum of its proper divisors (1).

212881129 is an equidigital number, since it uses as much as digits as its factorization.

212881129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 34.

The square root of 212881129 is about 14590.4464976230. The cubic root of 212881129 is about 597.0981444983.

The spelling of 212881129 in words is "two hundred twelve million, eight hundred eighty-one thousand, one hundred twenty-nine".