20213211114121 has 2 divisors, whose sum is σ = 20213211114122. Its totient is φ = 20213211114120.

The previous prime is 20213211114059. The next prime is 20213211114199. The reversal of 20213211114121 is 12141111231202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13446969674121 + 6766241440000 = 3667011^2 + 2601200^2 .

It is a cyclic number.

It is not a de Polignac number, because 20213211114121 - 2⁹ = 20213211113609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20213211114092 and 20213211114101.

It is not a weakly prime, because it can be changed into another prime (20213211114821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106605557060 + 10106605557061.

It is an arithmetic number, because the mean of its divisors is an integer number (10106605557061).

Almost surely, 2^{20213211114121} is an apocalyptic number.

It is an amenable number.

20213211114121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213211114121 is an equidigital number, since it uses as much as digits as its factorization.

20213211114121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 20213211114121 its reverse (12141111231202), we get a palindrome (32354322345323).

The spelling of 20213211114121 in words is "twenty trillion, two hundred thirteen billion, two hundred eleven million, one hundred fourteen thousand, one hundred twenty-one".