211203421242 has 16 divisors (see below), whose sum is σ = 460807464672. Its totient is φ = 64001036720.

The previous prime is 211203421229. The next prime is 211203421277. The reversal of 211203421242 is 242124302112.

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, 1600025853 + ... + 1600025984.

It is an arithmetic number, because the mean of its divisors is an integer number (28800466542).

Almost surely, 2^211203421242 is an apocalyptic number.

211203421242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211203421242 is an abundant number, since it is smaller than the sum of its proper divisors (249604043430).

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

211203421242 is a wasteful number, since it uses less digits than its factorization.

211203421242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200051853.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 211203421242 its reverse (242124302112), we get a palindrome (453327723354).

The spelling of 211203421242 in words is "two hundred eleven billion, two hundred three million, four hundred twenty-one thousand, two hundred forty-two".