211001020222212 has 288 divisors, whose sum is σ = 613747779765120. Its totient is φ = 60538881392640.

The previous prime is 211001020222193. The next prime is 211001020222261. The reversal of 211001020222212 is 212222020100112.

It is a happy number.

211001020222212 is a `hidden beast` number, since 211 + 0 + 0 + 1 + 0 + 20 + 222 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 168857188 + ... + 170102180.

It is an arithmetic number, because the mean of its divisors is an integer number (2131068679740).

Almost surely, 2^{211001020222212} is an apocalyptic number.

211001020222212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211001020222212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306873889882560).

211001020222212 is an abundant number, since it is smaller than the sum of its proper divisors (402746759542908).

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

211001020222212 is a wasteful number, since it uses less digits than its factorization.

211001020222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245363 (or 1245358 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 211001020222212 its reverse (212222020100112), we get a palindrome (423223040322324).

The spelling of 211001020222212 in words is "two hundred eleven trillion, one billion, twenty million, two hundred twenty-two thousand, two hundred twelve".