20012211120121 has 16 divisors (see below), whose sum is σ = 22002277248000. Its totient is φ = 18050894586000.

The previous prime is 20012211120107. The next prime is 20012211120149. The reversal of 20012211120121 is 12102111221002.

It is a cyclic number.

It is not a de Polignac number, because 20012211120121 - 2⁹ = 20012211119609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20012211120095 and 20012211120104.

It is not an unprimeable number, because it can be changed into a prime (20012211120221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5786571 + ... + 8573728.

It is an arithmetic number, because the mean of its divisors is an integer number (1375142328000).

Almost surely, 2^{20012211120121} is an apocalyptic number.

It is an amenable number.

20012211120121 is a deficient number, since it is larger than the sum of its proper divisors (1990066127879).

20012211120121 is a wasteful number, since it uses less digits than its factorization.

20012211120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14361300.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20012211120121 its reverse (12102111221002), we get a palindrome (32114322341123).

The spelling of 20012211120121 in words is "twenty trillion, twelve billion, two hundred eleven million, one hundred twenty thousand, one hundred twenty-one".