212201111011020 has 48 divisors (see below), whose sum is σ = 610221573292128. Its totient is φ = 55057585559040.

The previous prime is 212201111011013. The next prime is 212201111011031. The reversal of 212201111011020 is 20110111102212.

It is a happy number.

It is a super-2 number, since 2×212201111011020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47793040801 + ... + 47793045240.

It is an arithmetic number, because the mean of its divisors is an integer number (12712949443586).

Almost surely, 2^{212201111011020} is an apocalyptic number.

212201111011020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212201111011020 is an abundant number, since it is smaller than the sum of its proper divisors (398020462281108).

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

212201111011020 is a wasteful number, since it uses less digits than its factorization.

212201111011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95586086090 (or 95586086088 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212201111011020 its reverse (20110111102212), we get a palindrome (232311222113232).

The spelling of 212201111011020 in words is "two hundred twelve trillion, two hundred one billion, one hundred eleven million, eleven thousand, twenty".