120212222021 has 4 divisors (see below), whose sum is σ = 120213530700. Its totient is φ = 120210913344.

The previous prime is 120212221993. The next prime is 120212222047. The reversal of 120212222021 is 120222212021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41229302500 + 78982919521 = 203050^2 + 281039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120212222021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120212222071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505226 + ... + 704043.

It is an arithmetic number, because the mean of its divisors is an integer number (30053382675).

Almost surely, 2^120212222021 is an apocalyptic number.

It is an amenable number.

120212222021 is a deficient number, since it is larger than the sum of its proper divisors (1308679).

120212222021 is an equidigital number, since it uses as much as digits as its factorization.

120212222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308678.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 120212222021 its reverse (120222212021), we get a palindrome (240434434042).

The spelling of 120212222021 in words is "one hundred twenty billion, two hundred twelve million, two hundred twenty-two thousand, twenty-one".