211230421140 has 24 divisors (see below), whose sum is σ = 591445179360. Its totient is φ = 56328112288.

The previous prime is 211230421133. The next prime is 211230421159. The reversal of 211230421140 is 41124032112.

It is a congruent number.

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, 1760253450 + ... + 1760253569.

It is an arithmetic number, because the mean of its divisors is an integer number (24643549140).

Almost surely, 2^211230421140 is an apocalyptic number.

211230421140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211230421140 is an abundant number, since it is smaller than the sum of its proper divisors (380214758220).

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

211230421140 is a wasteful number, since it uses less digits than its factorization.

211230421140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520507031 (or 3520507029 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 211230421140 its reverse (41124032112), we get a palindrome (252354453252).

The spelling of 211230421140 in words is "two hundred eleven billion, two hundred thirty million, four hundred twenty-one thousand, one hundred forty".