121020111021253 has 2 divisors, whose sum is σ = 121020111021254. Its totient is φ = 121020111021252.

The previous prime is 121020111021223. The next prime is 121020111021259. The reversal of 121020111021253 is 352120111020121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88925993883364 + 32094117137889 = 9430058^2 + 5665167^2 .

It is a cyclic number.

It is not a de Polignac number, because 121020111021253 - 2⁵ = 121020111021221 is a prime.

It is a super-3 number, since 3×121020111021253³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121020111021259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510055510626 + 60510055510627.

It is an arithmetic number, because the mean of its divisors is an integer number (60510055510627).

Almost surely, 2^{121020111021253} is an apocalyptic number.

It is an amenable number.

121020111021253 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020111021253 is an equidigital number, since it uses as much as digits as its factorization.

121020111021253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 22.

Adding to 121020111021253 its reverse (352120111020121), we get a palindrome (473140222041374).

The spelling of 121020111021253 in words is "one hundred twenty-one trillion, twenty billion, one hundred eleven million, twenty-one thousand, two hundred fifty-three".