211222220019984 has 30 divisors (see below), whose sum is σ = 591128851861886. Its totient is φ = 70407406673280.

The previous prime is 211222220019983. The next prime is 211222220020013. The reversal of 211222220019984 is 489910022222112.

211222220019984 is a `hidden beast` number, since 2 + 11 + 222 + 220 + 0 + 199 + 8 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 180145252112400 + 31076967907584 = 13421820^2 + 5574672^2 .

It is a super-2 number, since 2×211222220019984² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211222220019983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 733410486037 + ... + 733410486324.

Almost surely, 2^{211222220019984} is an apocalyptic number.

211222220019984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

211222220019984 is an abundant number, since it is smaller than the sum of its proper divisors (379906631841902).

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

211222220019984 is a wasteful number, since it uses less digits than its factorization.

211222220019984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466820972375 (or 1466820972366 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 211222220019984 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred twenty million, nineteen thousand, nine hundred eighty-four".