1212020199969 has 8 divisors (see below), whose sum is σ = 1622034469440. Its totient is φ = 805009698576.

The previous prime is 1212020199953. The next prime is 1212020199983. The reversal of 1212020199969 is 9699910202121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1212020199969 - 2⁴ = 1212020199953 is a prime.

It is a super-2 number, since 2×1212020199969² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1212020199919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750941077 + ... + 750942690.

It is an arithmetic number, because the mean of its divisors is an integer number (202754308680).

Almost surely, 2^{1212020199969} is an apocalyptic number.

It is an amenable number.

1212020199969 is a deficient number, since it is larger than the sum of its proper divisors (410014269471).

1212020199969 is a wasteful number, since it uses less digits than its factorization.

1212020199969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501884039.

The product of its (nonzero) digits is 314928, while the sum is 51.

The spelling of 1212020199969 in words is "one trillion, two hundred twelve billion, twenty million, one hundred ninety-nine thousand, nine hundred sixty-nine".