212011201988 has 6 divisors (see below), whose sum is σ = 371019603486. Its totient is φ = 106005600992.

The previous prime is 212011201937. The next prime is 212011202041. The reversal of 212011201988 is 889102110212.

212011201988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 194585089924 + 17426112064 = 441118^2 + 132008^2 .

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 as a sum of consecutive naturals, namely, 26501400245 + ... + 26501400252.

It is an arithmetic number, because the mean of its divisors is an integer number (61836600581).

Almost surely, 2^212011201988 is an apocalyptic number.

It is an amenable number.

212011201988 is a deficient number, since it is larger than the sum of its proper divisors (159008401498).

212011201988 is a wasteful number, since it uses less digits than its factorization.

212011201988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53002800501 (or 53002800499 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 35.

The spelling of 212011201988 in words is "two hundred twelve billion, eleven million, two hundred one thousand, nine hundred eighty-eight".