211121212212042 has 32 divisors (see below), whose sum is σ = 480655408043520. Its totient is φ = 61194554263920.

The previous prime is 211121212212041. The next prime is 211121212212047. The reversal of 211121212212042 is 240212212121112.

It is a super-2 number, since 2×211121212212042² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211121212212041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69539264692 + ... + 69539267727.

It is an arithmetic number, because the mean of its divisors is an integer number (15020481501360).

Almost surely, 2^{211121212212042} is an apocalyptic number.

211121212212042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211121212212042 is an abundant number, since it is smaller than the sum of its proper divisors (269534195831478).

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

211121212212042 is a wasteful number, since it uses less digits than its factorization.

211121212212042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139078532458.

The product of its (nonzero) digits is 512, while the sum is 24.

Adding to 211121212212042 its reverse (240212212121112), we get a palindrome (451333424333154).

The spelling of 211121212212042 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred twelve million, two hundred twelve thousand, forty-two".