121002111020019 has 16 divisors (see below), whose sum is σ = 163610688913920. Its totient is φ = 79530834136320.

The previous prime is 121002111019963. The next prime is 121002111020029. The reversal of 121002111020019 is 910020111200121.

It is not a de Polignac number, because 121002111020019 - 2¹² = 121002111015923 is a prime.

It is a super-2 number, since 2×121002111020019² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121002111019977 and 121002111020004.

It is not an unprimeable number, because it can be changed into a prime (121002111020029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12208579 + ... + 19775075.

It is an arithmetic number, because the mean of its divisors is an integer number (10225668057120).

Almost surely, 2^{121002111020019} is an apocalyptic number.

121002111020019 is a deficient number, since it is larger than the sum of its proper divisors (42608577893901).

121002111020019 is an equidigital number, since it uses as much as digits as its factorization.

121002111020019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7641650.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 121002111020019 in words is "one hundred twenty-one trillion, two billion, one hundred eleven million, twenty thousand, nineteen".