211012432505 has 64 divisors (see below), whose sum is σ = 297799082496. Its totient is φ = 140555520000.

The previous prime is 211012432451. The next prime is 211012432507. The reversal of 211012432505 is 505234210112.

It is not a de Polignac number, because 211012432505 - 2⁶ = 211012432441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211012432507) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 105875789 + ... + 105877781.

It is an arithmetic number, because the mean of its divisors is an integer number (4653110664).

Almost surely, 2^211012432505 is an apocalyptic number.

It is an amenable number.

211012432505 is a deficient number, since it is larger than the sum of its proper divisors (86786649991).

211012432505 is a wasteful number, since it uses less digits than its factorization.

211012432505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 211012432505 its reverse (505234210112), we get a palindrome (716246642617).

The spelling of 211012432505 in words is "two hundred eleven billion, twelve million, four hundred thirty-two thousand, five hundred five".