211020121122012 has 96 divisors (see below), whose sum is σ = 553552873843200. Its totient is φ = 69513452985600.

The previous prime is 211020121121959. The next prime is 211020121122017. The reversal of 211020121122012 is 210221121020112.

211020121122012 is a `hidden beast` number, since 21 + 1 + 0 + 201 + 211 + 220 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020121122017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27534712 + ... + 34354047.

It is an arithmetic number, because the mean of its divisors is an integer number (5766175769200).

Almost surely, 2^{211020121122012} is an apocalyptic number.

It is an amenable number.

211020121122012 is an abundant number, since it is smaller than the sum of its proper divisors (342532752721188).

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

211020121122012 is a wasteful number, since it uses less digits than its factorization.

211020121122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61889144 (or 61889136 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211020121122012 its reverse (210221121020112), we get a palindrome (421241242142124).

The spelling of 211020121122012 in words is "two hundred eleven trillion, twenty billion, one hundred twenty-one million, one hundred twenty-two thousand, twelve".