211978488722 has 256 divisors, whose sum is σ = 469628845056. Its totient is φ = 69009408000.

The previous prime is 211978488661. The next prime is 211978488767. The reversal of 211978488722 is 227884879112.

211978488722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 101862722 + ... + 101864802.

It is an arithmetic number, because the mean of its divisors is an integer number (1834487676).

Almost surely, 2^211978488722 is an apocalyptic number.

211978488722 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211978488722 is an abundant number, since it is smaller than the sum of its proper divisors (257650356334).

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

211978488722 is a wasteful number, since it uses less digits than its factorization.

211978488722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245.

The product of its digits is 7225344, while the sum is 59.

The spelling of 211978488722 in words is "two hundred eleven billion, nine hundred seventy-eight million, four hundred eighty-eight thousand, seven hundred twenty-two".