121101000020501 has 2 divisors, whose sum is σ = 121101000020502. Its totient is φ = 121101000020500.

The previous prime is 121101000020471. The next prime is 121101000020503. The reversal of 121101000020501 is 105020000101121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120829560062500 + 271439958001 = 10992250^2 + 520999^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121101000020501 is a prime.

Together with 121101000020503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121101000020503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550500010250 + 60550500010251.

It is an arithmetic number, because the mean of its divisors is an integer number (60550500010251).

Almost surely, 2^{121101000020501} is an apocalyptic number.

It is an amenable number.

121101000020501 is a deficient number, since it is larger than the sum of its proper divisors (1).

121101000020501 is an equidigital number, since it uses as much as digits as its factorization.

121101000020501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20, while the sum is 14.

Adding to 121101000020501 its reverse (105020000101121), we get a palindrome (226121000121622).

The spelling of 121101000020501 in words is "one hundred twenty-one trillion, one hundred one billion, twenty thousand, five hundred one".