20121202001057 has 2 divisors, whose sum is σ = 20121202001058. Its totient is φ = 20121202001056.

The previous prime is 20121202001041. The next prime is 20121202001123. The reversal of 20121202001057 is 75010020212102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20067210366736 + 53991634321 = 4479644^2 + 232361^2 .

It is a cyclic number.

It is not a de Polignac number, because 20121202001057 - 2⁴ = 20121202001041 is a prime.

It is not a weakly prime, because it can be changed into another prime (20121202001657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060601000528 + 10060601000529.

It is an arithmetic number, because the mean of its divisors is an integer number (10060601000529).

Almost surely, 2^{20121202001057} is an apocalyptic number.

It is an amenable number.

20121202001057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121202001057 is an equidigital number, since it uses as much as digits as its factorization.

20121202001057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 23.

Adding to 20121202001057 its reverse (75010020212102), we get a palindrome (95131222213159).

The spelling of 20121202001057 in words is "twenty trillion, one hundred twenty-one billion, two hundred two million, one thousand, fifty-seven".