121020222021 has 8 divisors (see below), whose sum is σ = 161361919680. Its totient is φ = 80679336192.

The previous prime is 121020222019. The next prime is 121020222023. The reversal of 121020222021 is 120222020121.

It is an interprime number because it is at equal distance from previous prime (121020222019) and next prime (121020222023).

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

It is not a de Polignac number, because 121020222021 - 2¹ = 121020222019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020222023) 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, 405285 + ... + 637413.

It is an arithmetic number, because the mean of its divisors is an integer number (20170239960).

Almost surely, 2^121020222021 is an apocalyptic number.

It is an amenable number.

121020222021 is a deficient number, since it is larger than the sum of its proper divisors (40341697659).

121020222021 is a wasteful number, since it uses less digits than its factorization.

121020222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405915.

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

Adding to 121020222021 its reverse (120222020121), we get a palindrome (241242242142).

The spelling of 121020222021 in words is "one hundred twenty-one billion, twenty million, two hundred twenty-two thousand, twenty-one".