211156278103 has 2 divisors, whose sum is σ = 211156278104. Its totient is φ = 211156278102.

The previous prime is 211156278097. The next prime is 211156278187. The reversal of 211156278103 is 301872651112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211156278103 is a prime.

It is a super-2 number, since 2×211156278103² (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 (211156278703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105578139051 + 105578139052.

It is an arithmetic number, because the mean of its divisors is an integer number (105578139052).

Almost surely, 2^211156278103 is an apocalyptic number.

211156278103 is a deficient number, since it is larger than the sum of its proper divisors (1).

211156278103 is an equidigital number, since it uses as much as digits as its factorization.

211156278103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 211156278103 in words is "two hundred eleven billion, one hundred fifty-six million, two hundred seventy-eight thousand, one hundred three".