1201212121219 has 16 divisors (see below), whose sum is σ = 1335099145824. Its totient is φ = 1071630784000.

The previous prime is 1201212121199. The next prime is 1201212121237. The reversal of 1201212121219 is 9121212121021.

It is a cyclic number.

It is not a de Polignac number, because 1201212121219 - 2⁷ = 1201212121091 is a prime.

It is a super-2 number, since 2×1201212121219² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1201212121193 and 1201212121202.

It is not an unprimeable number, because it can be changed into a prime (1201212121259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4658524 + ... + 4909609.

It is an arithmetic number, because the mean of its divisors is an integer number (83443696614).

Almost surely, 2^{1201212121219} is an apocalyptic number.

1201212121219 is a deficient number, since it is larger than the sum of its proper divisors (133887024605).

1201212121219 is a wasteful number, since it uses less digits than its factorization.

1201212121219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9568358.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 1201212121219 in words is "one trillion, two hundred one billion, two hundred twelve million, one hundred twenty-one thousand, two hundred nineteen".