100012221220157 has 2 divisors, whose sum is σ = 100012221220158. Its totient is φ = 100012221220156.

The previous prime is 100012221220147. The next prime is 100012221220231. The reversal of 100012221220157 is 751022122210001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99366984953401 + 645236266756 = 9968299^2 + 803266^2 .

It is a cyclic number.

It is not a de Polignac number, because 100012221220157 - 2³⁴ = 99995041350973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100012221220147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50006110610078 + 50006110610079.

It is an arithmetic number, because the mean of its divisors is an integer number (50006110610079).

Almost surely, 2^{100012221220157} is an apocalyptic number.

It is an amenable number.

100012221220157 is a deficient number, since it is larger than the sum of its proper divisors (1).

100012221220157 is an equidigital number, since it uses as much as digits as its factorization.

100012221220157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 26.

Adding to 100012221220157 its reverse (751022122210001), we get a palindrome (851034343430158).

The spelling of 100012221220157 in words is "one hundred trillion, twelve billion, two hundred twenty-one million, two hundred twenty thousand, one hundred fifty-seven".