100020311221177 has 2 divisors, whose sum is σ = 100020311221178. Its totient is φ = 100020311221176.

The previous prime is 100020311221133. The next prime is 100020311221223. The reversal of 100020311221177 is 771122113020001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98752336131241 + 1267975089936 = 9937421^2 + 1126044^2 .

It is a cyclic number.

It is not a de Polignac number, because 100020311221177 - 2³¹ = 100018163737529 is a prime.

It is a super-2 number, since 2×100020311221177² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100020311221877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50010155610588 + 50010155610589.

It is an arithmetic number, because the mean of its divisors is an integer number (50010155610589).

Almost surely, 2^{100020311221177} is an apocalyptic number.

It is an amenable number.

100020311221177 is a deficient number, since it is larger than the sum of its proper divisors (1).

100020311221177 is an equidigital number, since it uses as much as digits as its factorization.

100020311221177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 28.

Adding to 100020311221177 its reverse (771122113020001), we get a palindrome (871142424241178).

The spelling of 100020311221177 in words is "one hundred trillion, twenty billion, three hundred eleven million, two hundred twenty-one thousand, one hundred seventy-seven".