1222120020021 has 8 divisors (see below), whose sum is σ = 1629613256544. Its totient is φ = 814686731760.

The previous prime is 1222120019987. The next prime is 1222120020041. The reversal of 1222120020021 is 1200200212221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222120020021 - 2⁹ = 1222120019509 is a prime.

It is a super-2 number, since 2×1222120020021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222120020041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14939475 + ... + 15021056.

It is an arithmetic number, because the mean of its divisors is an integer number (203701657068).

Almost surely, 2^{1222120020021} is an apocalyptic number.

It is an amenable number.

1222120020021 is a deficient number, since it is larger than the sum of its proper divisors (407493236523).

1222120020021 is a wasteful number, since it uses less digits than its factorization.

1222120020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29974131.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1222120020021 its reverse (1200200212221), we get a palindrome (2422320232242).

The spelling of 1222120020021 in words is "one trillion, two hundred twenty-two billion, one hundred twenty million, twenty thousand, twenty-one".