211121101210120 has 32 divisors (see below), whose sum is σ = 475105105215000. Its totient is φ = 84433751152128.

The previous prime is 211121101210111. The next prime is 211121101210121. The reversal of 211121101210120 is 21012101121112.

It can be written as a sum of positive squares in 4 ways, for example, as 81787026529924 + 129334074680196 = 9043618^2 + 11372514^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211121101210094 and 211121101210103.

It is not an unprimeable number, because it can be changed into a prime (211121101210121) 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, 458808789 + ... + 459268708.

Almost surely, 2^{211121101210120} is an apocalyptic number.

211121101210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211121101210120 is an abundant number, since it is smaller than the sum of its proper divisors (263984004004880).

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

211121101210120 is a wasteful number, since it uses less digits than its factorization.

211121101210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918083257 (or 918083253 counting only the distinct ones).

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

Adding to 211121101210120 its reverse (21012101121112), we get a palindrome (232133202331232).

The spelling of 211121101210120 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred one million, two hundred ten thousand, one hundred twenty".