121012019153 has 2 divisors, whose sum is σ = 121012019154. Its totient is φ = 121012019152.

The previous prime is 121012019147. The next prime is 121012019239. The reversal of 121012019153 is 351910210121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113952154624 + 7059864529 = 337568^2 + 84023^2 .

It is a cyclic number.

It is not a de Polignac number, because 121012019153 - 2¹⁰ = 121012018129 is a prime.

It is not a weakly prime, because it can be changed into another prime (121012019143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506009576 + 60506009577.

It is an arithmetic number, because the mean of its divisors is an integer number (60506009577).

Almost surely, 2^121012019153 is an apocalyptic number.

It is an amenable number.

121012019153 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012019153 is an equidigital number, since it uses as much as digits as its factorization.

121012019153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 26.

Adding to 121012019153 its reverse (351910210121), we get a palindrome (472922229274).

The spelling of 121012019153 in words is "one hundred twenty-one billion, twelve million, nineteen thousand, one hundred fifty-three".