1202120019 has 12 divisors (see below), whose sum is σ = 1739443992. Its totient is φ = 800006400.

The previous prime is 1202119999. The next prime is 1202120021. The reversal of 1202120019 is 9100212021.

It is not a de Polignac number, because 1202120019 - 2⁹ = 1202119507 is a prime.

It is a super-2 number, since 2×1202120019² = 2890185080161120722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1202119983 and 1202120010.

It is not an unprimeable number, because it can be changed into a prime (1202120089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111822 + ... + 122099.

It is an arithmetic number, because the mean of its divisors is an integer number (144953666).

Almost surely, 2^1202120019 is an apocalyptic number.

1202120019 is a deficient number, since it is larger than the sum of its proper divisors (537323973).

1202120019 is a wasteful number, since it uses less digits than its factorization.

1202120019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234498 (or 234495 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1202120019 is about 34671.6024867614. The cubic root of 1202120019 is about 1063.2839944503.

The spelling of 1202120019 in words is "one billion, two hundred two million, one hundred twenty thousand, nineteen".