211022121044 has 24 divisors (see below), whose sum is σ = 440393993088. Its totient is φ = 86505962400.

The previous prime is 211022121043. The next prime is 211022121077. The reversal of 211022121044 is 440121220112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211022121043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163836407 + ... + 163837694.

It is an arithmetic number, because the mean of its divisors is an integer number (18349749712).

Almost surely, 2^211022121044 is an apocalyptic number.

It is an amenable number.

211022121044 is an abundant number, since it is smaller than the sum of its proper divisors (229371872044).

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

211022121044 is a wasteful number, since it uses less digits than its factorization.

211022121044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327674135 (or 327674133 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 211022121044 its reverse (440121220112), we get a palindrome (651143341156).

The spelling of 211022121044 in words is "two hundred eleven billion, twenty-two million, one hundred twenty-one thousand, forty-four".