121020021011101 has 2 divisors, whose sum is σ = 121020021011102. Its totient is φ = 121020021011100.

The previous prime is 121020021011093. The next prime is 121020021011111. The reversal of 121020021011101 is 101110120020121.

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., 117950481971001 + 3069539040100 = 10860501^2 + 1752010^2 .

It is a cyclic number.

It is not a de Polignac number, because 121020021011101 - 2³ = 121020021011093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121020021011111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510010505550 + 60510010505551.

It is an arithmetic number, because the mean of its divisors is an integer number (60510010505551).

Almost surely, 2^{121020021011101} is an apocalyptic number.

It is an amenable number.

121020021011101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020021011101 is an equidigital number, since it uses as much as digits as its factorization.

121020021011101 is an odious number, because the sum of its binary digits is odd.

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

Adding to 121020021011101 its reverse (101110120020121), we get a palindrome (222130141031222).

The spelling of 121020021011101 in words is "one hundred twenty-one trillion, twenty billion, twenty-one million, eleven thousand, one hundred one".