121102102120019 has 4 divisors (see below), whose sum is σ = 121112523102480. Its totient is φ = 121091681137560.

The previous prime is 121102102120009. The next prime is 121102102120057. The reversal of 121102102120019 is 910021201201121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121102102120019 - 2¹² = 121102102115923 is a prime.

It is a super-2 number, since 2×121102102120019² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121102102119976 and 121102102120003.

It is not an unprimeable number, because it can be changed into a prime (121102102120009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5210473799 + ... + 5210497040.

It is an arithmetic number, because the mean of its divisors is an integer number (30278130775620).

Almost surely, 2^{121102102120019} is an apocalyptic number.

121102102120019 is a deficient number, since it is larger than the sum of its proper divisors (10420982461).

121102102120019 is a wasteful number, since it uses less digits than its factorization.

121102102120019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10420982460.

The product of its (nonzero) digits is 144, while the sum is 23.

It can be divided in two parts, 121102102 and 120019, that added together give a palindrome (121222121).

The spelling of 121102102120019 in words is "one hundred twenty-one trillion, one hundred two billion, one hundred two million, one hundred twenty thousand, nineteen".