20021011120037 has 2 divisors, whose sum is σ = 20021011120038. Its totient is φ = 20021011120036.

The previous prime is 20021011119959. The next prime is 20021011120043. The reversal of 20021011120037 is 73002111012002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19279950119236 + 741061000801 = 4390894^2 + 860849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021011120037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20021011120057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010505560018 + 10010505560019.

It is an arithmetic number, because the mean of its divisors is an integer number (10010505560019).

Almost surely, 2^{20021011120037} is an apocalyptic number.

It is an amenable number.

20021011120037 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021011120037 is an equidigital number, since it uses as much as digits as its factorization.

20021011120037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 20021011120037 its reverse (73002111012002), we get a palindrome (93023122132039).

The spelling of 20021011120037 in words is "twenty trillion, twenty-one billion, eleven million, one hundred twenty thousand, thirty-seven".