211001201020 has 12 divisors (see below), whose sum is σ = 443102522184. Its totient is φ = 84400480400.

The previous prime is 211001200999. The next prime is 211001201023. The reversal of 211001201020 is 20102100112.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 211001200988 and 211001201006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211001201023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5275030006 + ... + 5275030045.

It is an arithmetic number, because the mean of its divisors is an integer number (36925210182).

Almost surely, 2^211001201020 is an apocalyptic number.

211001201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211001201020 is an abundant number, since it is smaller than the sum of its proper divisors (232101321164).

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

211001201020 is a wasteful number, since it uses less digits than its factorization.

211001201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10550060060 (or 10550060058 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 211001201020 its reverse (20102100112), we get a palindrome (231103301132).

The spelling of 211001201020 in words is "two hundred eleven billion, one million, two hundred one thousand, twenty".