212011221121120 has 48 divisors (see below), whose sum is σ = 501428744541648. Its totient is φ = 84710988403200.

The previous prime is 212011221121069. The next prime is 212011221121121. The reversal of 212011221121120 is 21121122110212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011221121121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730323531 + ... + 730613770.

It is an arithmetic number, because the mean of its divisors is an integer number (10446432177951).

Almost surely, 2^{212011221121120} is an apocalyptic number.

212011221121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212011221121120 is an abundant number, since it is smaller than the sum of its proper divisors (289417523420528).

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

212011221121120 is a wasteful number, since it uses less digits than its factorization.

212011221121120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460938223 (or 1460938215 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212011221121120 its reverse (21121122110212), we get a palindrome (233132343231332).

The spelling of 212011221121120 in words is "two hundred twelve trillion, eleven billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty".