211001202122020 has 24 divisors (see below), whose sum is σ = 443211743883384. Its totient is φ = 84379677148416.

The previous prime is 211001202121979. The next prime is 211001202122033. The reversal of 211001202122020 is 20221202100112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 228239329536 + 210772962792484 = 477744^2 + 14518022^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211001202121985 and 211001202122003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1300148107 + ... + 1300310386.

It is an arithmetic number, because the mean of its divisors is an integer number (18467155995141).

Almost surely, 2^{211001202122020} is an apocalyptic number.

211001202122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211001202122020 is an abundant number, since it is smaller than the sum of its proper divisors (232210541761364).

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

211001202122020 is a wasteful number, since it uses less digits than its factorization.

211001202122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600462559 (or 2600462557 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211001202122020 its reverse (20221202100112), we get a palindrome (231222404222132).

The spelling of 211001202122020 in words is "two hundred eleven trillion, one billion, two hundred two million, one hundred twenty-two thousand, twenty".