20001002022061 has 2 divisors, whose sum is σ = 20001002022062. Its totient is φ = 20001002022060.

The previous prime is 20001002022049. The next prime is 20001002022137. The reversal of 20001002022061 is 16022020010002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12679161329961 + 7321840692100 = 3560781^2 + 2705890^2 .

It is a cyclic number.

It is not a de Polignac number, because 20001002022061 - 2¹³ = 20001002013869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001002022011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000501011030 + 10000501011031.

It is an arithmetic number, because the mean of its divisors is an integer number (10000501011031).

Almost surely, 2^{20001002022061} is an apocalyptic number.

It is an amenable number.

20001002022061 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001002022061 is an equidigital number, since it uses as much as digits as its factorization.

20001002022061 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 16.

Adding to 20001002022061 its reverse (16022020010002), we get a palindrome (36023022032063).

The spelling of 20001002022061 in words is "twenty trillion, one billion, two million, twenty-two thousand, sixty-one".