121003619687 has 2 divisors, whose sum is σ = 121003619688. Its totient is φ = 121003619686.

The previous prime is 121003619669. The next prime is 121003619699. The reversal of 121003619687 is 786916300121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121003619687 - 2¹² = 121003615591 is a prime.

It is a super-2 number, since 2×121003619687² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121003619287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60501809843 + 60501809844.

It is an arithmetic number, because the mean of its divisors is an integer number (60501809844).

Almost surely, 2^121003619687 is an apocalyptic number.

121003619687 is a deficient number, since it is larger than the sum of its proper divisors (1).

121003619687 is an equidigital number, since it uses as much as digits as its factorization.

121003619687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 121003619687 in words is "one hundred twenty-one billion, three million, six hundred nineteen thousand, six hundred eighty-seven".