211332129991 has 2 divisors, whose sum is σ = 211332129992. Its totient is φ = 211332129990.

The previous prime is 211332129949. The next prime is 211332130019. The reversal of 211332129991 is 199921233112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211332129991 - 2¹³ = 211332121799 is a prime.

It is a super-2 number, since 2×211332129991² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211332129091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105666064995 + 105666064996.

It is an arithmetic number, because the mean of its divisors is an integer number (105666064996).

Almost surely, 2^211332129991 is an apocalyptic number.

211332129991 is a deficient number, since it is larger than the sum of its proper divisors (1).

211332129991 is an equidigital number, since it uses as much as digits as its factorization.

211332129991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 43.

The spelling of 211332129991 in words is "two hundred eleven billion, three hundred thirty-two million, one hundred twenty-nine thousand, nine hundred ninety-one".