211021213194 has 48 divisors (see below), whose sum is σ = 499266409824. Its totient is φ = 63883130400.

The previous prime is 211021213171. The next prime is 211021213199. The reversal of 211021213194 is 491312120112.

It is not an unprimeable number, because it can be changed into a prime (211021213199) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 319764 + ... + 724079.

It is an arithmetic number, because the mean of its divisors is an integer number (10401383538).

Almost surely, 2^211021213194 is an apocalyptic number.

211021213194 is an abundant number, since it is smaller than the sum of its proper divisors (288245196630).

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

211021213194 is a wasteful number, since it uses less digits than its factorization.

211021213194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044883 (or 1044880 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The spelling of 211021213194 in words is "two hundred eleven billion, twenty-one million, two hundred thirteen thousand, one hundred ninety-four".