101111321251 has 2 divisors, whose sum is σ = 101111321252. Its totient is φ = 101111321250.

The previous prime is 101111321237. The next prime is 101111321263. The reversal of 101111321251 is 152123111101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101111321251 - 2¹⁷ = 101111190179 is a prime.

It is not a weakly prime, because it can be changed into another prime (101111321351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50555660625 + 50555660626.

It is an arithmetic number, because the mean of its divisors is an integer number (50555660626).

Almost surely, 2^101111321251 is an apocalyptic number.

101111321251 is a deficient number, since it is larger than the sum of its proper divisors (1).

101111321251 is an equidigital number, since it uses as much as digits as its factorization.

101111321251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 19.

Adding to 101111321251 its reverse (152123111101), we get a palindrome (253234432352).

The spelling of 101111321251 in words is "one hundred one billion, one hundred eleven million, three hundred twenty-one thousand, two hundred fifty-one".