100120121293 has 2 divisors, whose sum is σ = 100120121294. Its totient is φ = 100120121292.

The previous prime is 100120121291. The next prime is 100120121359. The reversal of 100120121293 is 392121021001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96797521129 + 3322600164 = 311123^2 + 57642^2 .

It is a cyclic number.

It is not a de Polignac number, because 100120121293 - 2¹ = 100120121291 is a prime.

Together with 100120121291, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100120121291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060060646 + 50060060647.

It is an arithmetic number, because the mean of its divisors is an integer number (50060060647).

Almost surely, 2^100120121293 is an apocalyptic number.

It is an amenable number.

100120121293 is a deficient number, since it is larger than the sum of its proper divisors (1).

100120121293 is an equidigital number, since it uses as much as digits as its factorization.

100120121293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 100120121293 its reverse (392121021001), we get a palindrome (492241142294).

The spelling of 100120121293 in words is "one hundred billion, one hundred twenty million, one hundred twenty-one thousand, two hundred ninety-three".