121011015253 has 2 divisors, whose sum is σ = 121011015254. Its totient is φ = 121011015252.

The previous prime is 121011015227. The next prime is 121011015269. The reversal of 121011015253 is 352510110121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120441620209 + 569395044 = 347047^2 + 23862^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121011015253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121011015353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505507626 + 60505507627.

It is an arithmetic number, because the mean of its divisors is an integer number (60505507627).

Almost surely, 2^121011015253 is an apocalyptic number.

It is an amenable number.

121011015253 is a deficient number, since it is larger than the sum of its proper divisors (1).

121011015253 is an equidigital number, since it uses as much as digits as its factorization.

121011015253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 22.

Adding to 121011015253 its reverse (352510110121), we get a palindrome (473521125374).

The spelling of 121011015253 in words is "one hundred twenty-one billion, eleven million, fifteen thousand, two hundred fifty-three".