101026012121 has 2 divisors, whose sum is σ = 101026012122. Its totient is φ = 101026012120.

The previous prime is 101026012117. The next prime is 101026012133. The reversal of 101026012121 is 121210620101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85147240000 + 15878772121 = 291800^2 + 126011^2 .

It is an emirp because it is prime and its reverse (121210620101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101026012121 - 2² = 101026012117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101026012121.

It is not a weakly prime, because it can be changed into another prime (101026012141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50513006060 + 50513006061.

It is an arithmetic number, because the mean of its divisors is an integer number (50513006061).

Almost surely, 2^101026012121 is an apocalyptic number.

It is an amenable number.

101026012121 is a deficient number, since it is larger than the sum of its proper divisors (1).

101026012121 is an equidigital number, since it uses as much as digits as its factorization.

101026012121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 101026012121 its reverse (121210620101), we get a palindrome (222236632222).

The spelling of 101026012121 in words is "one hundred one billion, twenty-six million, twelve thousand, one hundred twenty-one".