212021203101121 has 2 divisors, whose sum is σ = 212021203101122. Its totient is φ = 212021203101120.

The previous prime is 212021203101047. The next prime is 212021203101137. The reversal of 212021203101121 is 121101302120212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172671163393600 + 39350039707521 = 13140440^2 + 6272961^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021203101121 - 2²⁵ = 212021169546689 is a prime.

It is a super-2 number, since 2×212021203101121² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212021203161121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010601550560 + 106010601550561.

It is an arithmetic number, because the mean of its divisors is an integer number (106010601550561).

Almost surely, 2^{212021203101121} is an apocalyptic number.

It is an amenable number.

212021203101121 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021203101121 is an equidigital number, since it uses as much as digits as its factorization.

212021203101121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 212021203101121 its reverse (121101302120212), we get a palindrome (333122505221333).

The spelling of 212021203101121 in words is "two hundred twelve trillion, twenty-one billion, two hundred three million, one hundred one thousand, one hundred twenty-one".