20120002022121 has 8 divisors (see below), whose sum is σ = 28404708737184. Its totient is φ = 12624314994240.

The previous prime is 20120002022047. The next prime is 20120002022137. The reversal of 20120002022121 is 12122020002102.

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

It is not a de Polignac number, because 20120002022121 - 2¹⁴ = 20120002005737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20120002022121.

It is not an unprimeable number, because it can be changed into a prime (20120002022621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197254921735 + ... + 197254921836.

It is an arithmetic number, because the mean of its divisors is an integer number (3550588592148).

Almost surely, 2^{20120002022121} is an apocalyptic number.

It is an amenable number.

20120002022121 is a deficient number, since it is larger than the sum of its proper divisors (8284706715063).

20120002022121 is a wasteful number, since it uses less digits than its factorization.

20120002022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394509843591.

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

Adding to 20120002022121 its reverse (12122020002102), we get a palindrome (32242022024223).

The spelling of 20120002022121 in words is "twenty trillion, one hundred twenty billion, two million, twenty-two thousand, one hundred twenty-one".