211733820061 has 32 divisors (see below), whose sum is σ = 228662818560. Its totient is φ = 195649219584.

The previous prime is 211733820031. The next prime is 211733820083. The reversal of 211733820061 is 160028337112.

It is a cyclic number.

It is not a de Polignac number, because 211733820061 - 2⁵ = 211733820029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211733819999 and 211733820026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211733820031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63908341 + ... + 63911653.

It is an arithmetic number, because the mean of its divisors is an integer number (7145713080).

Almost surely, 2^211733820061 is an apocalyptic number.

It is an amenable number.

211733820061 is a deficient number, since it is larger than the sum of its proper divisors (16928998499).

211733820061 is a wasteful number, since it uses less digits than its factorization.

211733820061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4405.

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 211733820061 in words is "two hundred eleven billion, seven hundred thirty-three million, eight hundred twenty thousand, sixty-one".