20120101202121 has 8 divisors (see below), whose sum is σ = 26827133044320. Its totient is φ = 13413235080672.

The previous prime is 20120101202063. The next prime is 20120101202143. The reversal of 20120101202121 is 12120210102102.

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

It is not a de Polignac number, because 20120101202121 - 2¹⁵ = 20120101169353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20120101202121.

It is not an unprimeable number, because it can be changed into a prime (20120101202171) 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, 41146620 + ... + 41632733.

It is an arithmetic number, because the mean of its divisors is an integer number (3353391630540).

Almost surely, 2^{20120101202121} is an apocalyptic number.

It is an amenable number.

20120101202121 is a deficient number, since it is larger than the sum of its proper divisors (6707031842199).

20120101202121 is an equidigital number, since it uses as much as digits as its factorization.

20120101202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82860375.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20120101202121 its reverse (12120210102102), we get a palindrome (32240311304223).

The spelling of 20120101202121 in words is "twenty trillion, one hundred twenty billion, one hundred one million, two hundred two thousand, one hundred twenty-one".