211011042 has 16 divisors (see below), whose sum is σ = 460387872. Its totient is φ = 63942720.

The previous prime is 211011011. The next prime is 211011071. The reversal of 211011042 is 240110112.

It is a happy number.

211011042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1598503 + ... + 1598634.

It is an arithmetic number, because the mean of its divisors is an integer number (28774242).

Almost surely, 2^211011042 is an apocalyptic number.

211011042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211011042 is an abundant number, since it is smaller than the sum of its proper divisors (249376830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211011042 is a wasteful number, since it uses less digits than its factorization.

211011042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197153.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 211011042 is about 14526.2191226761. The cubic root of 211011042 is about 595.3445660933.

Adding to 211011042 its reverse (240110112), we get a palindrome (451121154).

The spelling of 211011042 in words is "two hundred eleven million, eleven thousand, forty-two".