20212012101121 has 2 divisors, whose sum is σ = 20212012101122. Its totient is φ = 20212012101120.

The previous prime is 20212012101101. The next prime is 20212012101163. The reversal of 20212012101121 is 12110121021202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18296664051600 + 1915348049521 = 4277460^2 + 1383961^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212012101121 - 2¹⁷ = 20212011970049 is a prime.

It is a super-2 number, since 2×20212012101121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20212012101095 and 20212012101104.

It is not a weakly prime, because it can be changed into another prime (20212012101101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106006050560 + 10106006050561.

It is an arithmetic number, because the mean of its divisors is an integer number (10106006050561).

Almost surely, 2^{20212012101121} is an apocalyptic number.

It is an amenable number.

20212012101121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212012101121 is an equidigital number, since it uses as much as digits as its factorization.

20212012101121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20212012101121 its reverse (12110121021202), we get a palindrome (32322133122323).

The spelling of 20212012101121 in words is "twenty trillion, two hundred twelve billion, twelve million, one hundred one thousand, one hundred twenty-one".