211222111020252 has 48 divisors (see below), whose sum is σ = 515614328151552. Its totient is φ = 67228625537920.

The previous prime is 211222111020251. The next prime is 211222111020253. The reversal of 211222111020252 is 252020111222112.

211222111020252 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (211222111020251) and next prime (211222111020253).

It is a super-2 number, since 2×211222111020252² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222111020251) 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, 4567138938 + ... + 4567185185.

It is an arithmetic number, because the mean of its divisors is an integer number (10741965169824).

Almost surely, 2^{211222111020252} is an apocalyptic number.

It is an amenable number.

211222111020252 is an abundant number, since it is smaller than the sum of its proper divisors (304392217131300).

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

211222111020252 is a wasteful number, since it uses less digits than its factorization.

211222111020252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9134324218 (or 9134324216 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 211222111020252 its reverse (252020111222112), we get a palindrome (463242222242364).

The spelling of 211222111020252 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred eleven million, twenty thousand, two hundred fifty-two".