211332129947 has 2 divisors, whose sum is σ = 211332129948. Its totient is φ = 211332129946.

The previous prime is 211332129923. The next prime is 211332129949. The reversal of 211332129947 is 749921233112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211332129947 - 2⁸ = 211332129691 is a prime.

It is a super-2 number, since 2×211332129947² (a number of 23 digits) contains 22 as substring.

Together with 211332129949, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 211332129898 and 211332129907.

It is not a weakly prime, because it can be changed into another prime (211332129949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105666064973 + 105666064974.

It is an arithmetic number, because the mean of its divisors is an integer number (105666064974).

Almost surely, 2^211332129947 is an apocalyptic number.

211332129947 is a deficient number, since it is larger than the sum of its proper divisors (1).

211332129947 is an equidigital number, since it uses as much as digits as its factorization.

211332129947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The spelling of 211332129947 in words is "two hundred eleven billion, three hundred thirty-two million, one hundred twenty-nine thousand, nine hundred forty-seven".