211212011112222 has 32 divisors (see below), whose sum is σ = 422565421335552. Its totient is φ = 70380438041664.

The previous prime is 211212011112203. The next prime is 211212011112241. The reversal of 211212011112222 is 222211110212112.

It is an interprime number because it is at equal distance from previous prime (211212011112203) and next prime (211212011112241).

It is a super-2 number, since 2×211212011112222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1994149938 + ... + 1994255850.

It is an arithmetic number, because the mean of its divisors is an integer number (13205169416736).

Almost surely, 2^{211212011112222} is an apocalyptic number.

211212011112222 is an abundant number, since it is smaller than the sum of its proper divisors (211353410223330).

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

211212011112222 is a wasteful number, since it uses less digits than its factorization.

211212011112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214032.

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

Adding to 211212011112222 its reverse (222211110212112), we get a palindrome (433423121324334).

The spelling of 211212011112222 in words is "two hundred eleven trillion, two hundred twelve billion, eleven million, one hundred twelve thousand, two hundred twenty-two".