121280012853 has 4 divisors (see below), whose sum is σ = 161706683808. Its totient is φ = 80853341900.

The previous prime is 121280012831. The next prime is 121280012881. The reversal of 121280012853 is 358210082121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121280012853 - 2⁸ = 121280012597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121280012053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20213335473 + ... + 20213335478.

It is an arithmetic number, because the mean of its divisors is an integer number (40426670952).

Almost surely, 2^121280012853 is an apocalyptic number.

It is an amenable number.

121280012853 is a deficient number, since it is larger than the sum of its proper divisors (40426670955).

121280012853 is an equidigital number, since it uses as much as digits as its factorization.

121280012853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40426670954.

The product of its (nonzero) digits is 7680, while the sum is 33.

Adding to 121280012853 its reverse (358210082121), we get a palindrome (479490094974).

The spelling of 121280012853 in words is "one hundred twenty-one billion, two hundred eighty million, twelve thousand, eight hundred fifty-three".