211211212022112 has 48 divisors (see below), whose sum is σ = 554593805201520. Its totient is φ = 70382864497152.

The previous prime is 211211212022099. The next prime is 211211212022119. The reversal of 211211212022112 is 211220212112112.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×211211212022112² (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 (211211212022119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325812687 + ... + 326460302.

It is an arithmetic number, because the mean of its divisors is an integer number (11554037608365).

Almost surely, 2^{211211212022112} is an apocalyptic number.

It is an amenable number.

211211212022112 is an abundant number, since it is smaller than the sum of its proper divisors (343382593179408).

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

211211212022112 is a wasteful number, since it uses less digits than its factorization.

211211212022112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652276375 (or 652276367 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 211211212022112 its reverse (211220212112112), we get a palindrome (422431424134224).

The spelling of 211211212022112 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred twelve million, twenty-two thousand, one hundred twelve".