1212020120011 has 4 divisors (see below), whose sum is σ = 1264716646992. Its totient is φ = 1159323593032.

The previous prime is 1212020119997. The next prime is 1212020120053. The reversal of 1212020120011 is 1100210202121.

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 1212020120011 - 2³⁷ = 1074581166539 is a prime.

It is a super-2 number, since 2×1212020120011² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1212020119973 and 1212020120000.

It is not an unprimeable number, because it can be changed into a prime (1212020120071) 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 3 ways as a sum of consecutive naturals, for example, 26348263456 + ... + 26348263501.

It is an arithmetic number, because the mean of its divisors is an integer number (316179161748).

Almost surely, 2^{1212020120011} is an apocalyptic number.

1212020120011 is a deficient number, since it is larger than the sum of its proper divisors (52696526981).

1212020120011 is an equidigital number, since it uses as much as digits as its factorization.

1212020120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52696526980.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1212020120011 its reverse (1100210202121), we get a palindrome (2312230322132).

The spelling of 1212020120011 in words is "one trillion, two hundred twelve billion, twenty million, one hundred twenty thousand, eleven".