10121021311 has 2 divisors, whose sum is σ = 10121021312. Its totient is φ = 10121021310.

The previous prime is 10121021303. The next prime is 10121021321. The reversal of 10121021311 is 11312012101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10121021311 - 2³ = 10121021303 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10121021291 and 10121021300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10121021321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060510655 + 5060510656.

It is an arithmetic number, because the mean of its divisors is an integer number (5060510656).

Almost surely, 2^10121021311 is an apocalyptic number.

10121021311 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121021311 is an equidigital number, since it uses as much as digits as its factorization.

10121021311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 10121021311 its reverse (11312012101), we get a palindrome (21433033412).

The spelling of 10121021311 in words is "ten billion, one hundred twenty-one million, twenty-one thousand, three hundred eleven".