211920034 has 16 divisors (see below), whose sum is σ = 335044800. Its totient is φ = 100252944.

The previous prime is 211920017. The next prime is 211920041. The reversal of 211920034 is 430029112.

It is a super-2 number, since 2×211920034² = 89820201621122312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211919987 and 211920014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30147 + ... + 36505.

It is an arithmetic number, because the mean of its divisors is an integer number (20940300).

Almost surely, 2^211920034 is an apocalyptic number.

211920034 is a deficient number, since it is larger than the sum of its proper divisors (123124766).

211920034 is a wasteful number, since it uses less digits than its factorization.

211920034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7257.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 211920034 is about 14557.4734758474. The cubic root of 211920034 is about 596.1982153046.

Adding to 211920034 its reverse (430029112), we get a palindrome (641949146).

The spelling of 211920034 in words is "two hundred eleven million, nine hundred twenty thousand, thirty-four".