100211211112157 has 2 divisors, whose sum is σ = 100211211112158. Its totient is φ = 100211211112156.

The previous prime is 100211211111997. The next prime is 100211211112183. The reversal of 100211211112157 is 751211112112001.

It is a happy number.

It is an a-pointer prime, because the next prime (100211211112183) can be obtained adding 100211211112157 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97121399490361 + 3089811621796 = 9855019^2 + 1757786^2 .

It is a cyclic number.

It is not a de Polignac number, because 100211211112157 - 2⁸ = 100211211111901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100211291112157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50105605556078 + 50105605556079.

It is an arithmetic number, because the mean of its divisors is an integer number (50105605556079).

Almost surely, 2^{100211211112157} is an apocalyptic number.

It is an amenable number.

100211211112157 is a deficient number, since it is larger than the sum of its proper divisors (1).

100211211112157 is an equidigital number, since it uses as much as digits as its factorization.

100211211112157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 26.

Adding to 100211211112157 its reverse (751211112112001), we get a palindrome (851422323224158).

The spelling of 100211211112157 in words is "one hundred trillion, two hundred eleven billion, two hundred eleven million, one hundred twelve thousand, one hundred fifty-seven".