211211434 has 32 divisors (see below), whose sum is σ = 385572096. Its totient is φ = 84706560.

The previous prime is 211211419. The next prime is 211211443. The reversal of 211211434 is 434112112.

211211434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211211434² = 89220539704672712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40627 + ... + 45529.

It is an arithmetic number, because the mean of its divisors is an integer number (12049128).

Almost surely, 2^211211434 is an apocalyptic number.

211211434 is a deficient number, since it is larger than the sum of its proper divisors (174360662).

211211434 is a wasteful number, since it uses less digits than its factorization.

211211434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5110.

The product of its digits is 192, while the sum is 19.

The square root of 211211434 is about 14533.1150824591. The cubic root of 211211434 is about 595.5329678327.

Adding to 211211434 its reverse (434112112), we get a palindrome (645323546).

The spelling of 211211434 in words is "two hundred eleven million, two hundred eleven thousand, four hundred thirty-four".