2120122221012 has 36 divisors (see below), whose sum is σ = 5401396256256. Its totient is φ = 701142780240.

The previous prime is 2120122220989. The next prime is 2120122221029. The reversal of 2120122221012 is 2101222210212.

It is a happy number.

2120122221012 is a `hidden beast` number, since 21 + 201 + 222 + 210 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231854814 + ... + 231863957.

It is an arithmetic number, because the mean of its divisors is an integer number (150038784896).

Almost surely, 2^{2120122221012} is an apocalyptic number.

It is an amenable number.

2120122221012 is an abundant number, since it is smaller than the sum of its proper divisors (3281274035244).

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

2120122221012 is a wasteful number, since it uses less digits than its factorization.

2120122221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463718908 (or 463718903 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2120122221012 its reverse (2101222210212), we get a palindrome (4221344431224).

The spelling of 2120122221012 in words is "two trillion, one hundred twenty billion, one hundred twenty-two million, two hundred twenty-one thousand, twelve".