211210139977 has 8 divisors (see below), whose sum is σ = 223794144000. Its totient is φ = 198643900224.

The previous prime is 211210139947. The next prime is 211210140019. The reversal of 211210139977 is 779931012112.

211210139977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211210139977 - 2³¹ = 209062656329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211210139947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4416577 + ... + 4464142.

It is an arithmetic number, because the mean of its divisors is an integer number (27974268000).

Almost surely, 2^211210139977 is an apocalyptic number.

It is an amenable number.

211210139977 is a deficient number, since it is larger than the sum of its proper divisors (12584004023).

211210139977 is a wasteful number, since it uses less digits than its factorization.

211210139977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8882135.

The product of its (nonzero) digits is 47628, while the sum is 43.

The spelling of 211210139977 in words is "two hundred eleven billion, two hundred ten million, one hundred thirty-nine thousand, nine hundred seventy-seven".