201211022210020 has 48 divisors (see below), whose sum is σ = 428546333038320. Its totient is φ = 79342051239936.

The previous prime is 201211022209979. The next prime is 201211022210027. The reversal of 201211022210020 is 20012220112102.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5792262650944 + 195418759559076 = 2406712^2 + 13979226^2 .

It is a super-3 number, since 3×201211022210020³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201211022209976 and 201211022210003.

It is not an unprimeable number, because it can be changed into a prime (201211022210027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31665175 + ... + 37484734.

It is an arithmetic number, because the mean of its divisors is an integer number (8928048604965).

Almost surely, 2^{201211022210020} is an apocalyptic number.

201211022210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201211022210020 is an abundant number, since it is smaller than the sum of its proper divisors (227335310828300).

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

201211022210020 is a wasteful number, since it uses less digits than its factorization.

201211022210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69151984 (or 69151982 counting only the distinct ones).

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

Adding to 201211022210020 its reverse (20012220112102), we get a palindrome (221223242322122).

The spelling of 201211022210020 in words is "two hundred one trillion, two hundred eleven billion, twenty-two million, two hundred ten thousand, twenty".