10121102010121 has 2 divisors, whose sum is σ = 10121102010122. Its totient is φ = 10121102010120.

The previous prime is 10121102010113. The next prime is 10121102010203. The reversal of 10121102010121 is 12101020112101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10060721234496 + 60380775625 = 3171864^2 + 245725^2 .

It is an emirp because it is prime and its reverse (12101020112101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10121102010121 - 2³ = 10121102010113 is a prime.

It is not a weakly prime, because it can be changed into another prime (10121102410121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060551005060 + 5060551005061.

It is an arithmetic number, because the mean of its divisors is an integer number (5060551005061).

Almost surely, 2^{10121102010121} is an apocalyptic number.

It is an amenable number.

10121102010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121102010121 is an equidigital number, since it uses as much as digits as its factorization.

10121102010121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10121102010121 its reverse (12101020112101), we get a palindrome (22222122122222).

The spelling of 10121102010121 in words is "ten trillion, one hundred twenty-one billion, one hundred two million, ten thousand, one hundred twenty-one".