12020001020121 has 32 divisors (see below), whose sum is σ = 16599830188032. Its totient is φ = 7728548143680.

The previous prime is 12020001020119. The next prime is 12020001020147. The reversal of 12020001020121 is 12102010002021.

It is not a de Polignac number, because 12020001020121 - 2¹ = 12020001020119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12020001020097 and 12020001020106.

It is not an unprimeable number, because it can be changed into a prime (12020001020101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36213511 + ... + 36543923.

It is an arithmetic number, because the mean of its divisors is an integer number (518744693376).

Almost surely, 2^{12020001020121} is an apocalyptic number.

It is an amenable number.

12020001020121 is a deficient number, since it is larger than the sum of its proper divisors (4579829167911).

12020001020121 is a wasteful number, since it uses less digits than its factorization.

12020001020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331773.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12020001020121 its reverse (12102010002021), we get a palindrome (24122011022142).

The spelling of 12020001020121 in words is "twelve trillion, twenty billion, one million, twenty thousand, one hundred twenty-one".