202011021202121 has 2 divisors, whose sum is σ = 202011021202122. Its totient is φ = 202011021202120.

The previous prime is 202011021202093. The next prime is 202011021202129. The reversal of 202011021202121 is 121202120110202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200870527494400 + 1140493707721 = 14172880^2 + 1067939^2 .

It is a cyclic number.

It is not a de Polignac number, because 202011021202121 - 2³⁸ = 201736143295177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202011021202121.

It is not a weakly prime, because it can be changed into another prime (202011021202129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101005510601060 + 101005510601061.

It is an arithmetic number, because the mean of its divisors is an integer number (101005510601061).

Almost surely, 2^{202011021202121} is an apocalyptic number.

It is an amenable number.

202011021202121 is a deficient number, since it is larger than the sum of its proper divisors (1).

202011021202121 is an equidigital number, since it uses as much as digits as its factorization.

202011021202121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 202011021202121 its reverse (121202120110202), we get a palindrome (323213141312323).

The spelling of 202011021202121 in words is "two hundred two trillion, eleven billion, twenty-one million, two hundred two thousand, one hundred twenty-one".