211122212021997 has 8 divisors (see below), whose sum is σ = 281496708588480. Its totient is φ = 140747928401760.

The previous prime is 211122212021957. The next prime is 211122212022041. The reversal of 211122212021997 is 799120212221112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211122212021997 - 2⁷ = 211122212021869 is a prime.

It is a super-2 number, since 2×211122212021997² (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 (211122212021947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50908672 + ... + 54899337.

It is an arithmetic number, because the mean of its divisors is an integer number (35187088573560).

Almost surely, 2^{211122212021997} is an apocalyptic number.

It is an amenable number.

211122212021997 is a deficient number, since it is larger than the sum of its proper divisors (70374496566483).

211122212021997 is a wasteful number, since it uses less digits than its factorization.

211122212021997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106473123.

The product of its (nonzero) digits is 36288, while the sum is 42.

The spelling of 211122212021997 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred twelve million, twenty-one thousand, nine hundred ninety-seven".