201020021122051 has 2 divisors, whose sum is σ = 201020021122052. Its totient is φ = 201020021122050.

The previous prime is 201020021122049. The next prime is 201020021122111. The reversal of 201020021122051 is 150221120020102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201020021122051 - 2¹ = 201020021122049 is a prime.

Together with 201020021122049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (201020021222051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510010561025 + 100510010561026.

It is an arithmetic number, because the mean of its divisors is an integer number (100510010561026).

Almost surely, 2^{201020021122051} is an apocalyptic number.

201020021122051 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020021122051 is an equidigital number, since it uses as much as digits as its factorization.

201020021122051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 201020021122051 its reverse (150221120020102), we get a palindrome (351241141142153).

The spelling of 201020021122051 in words is "two hundred one trillion, twenty billion, twenty-one million, one hundred twenty-two thousand, fifty-one".