1202120111011 has 2 divisors, whose sum is σ = 1202120111012. Its totient is φ = 1202120111010.

The previous prime is 1202120110991. The next prime is 1202120111029. The reversal of 1202120111011 is 1101110212021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1202120111011 - 2⁵ = 1202120110979 is a prime.

It is a super-2 number, since 2×1202120111011² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1202120110982 and 1202120111000.

It is not a weakly prime, because it can be changed into another prime (1202120111041) 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 as a sum of consecutive naturals, namely, 601060055505 + 601060055506.

It is an arithmetic number, because the mean of its divisors is an integer number (601060055506).

Almost surely, 2^{1202120111011} is an apocalyptic number.

1202120111011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202120111011 is an equidigital number, since it uses as much as digits as its factorization.

1202120111011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1202120111011 its reverse (1101110212021), we get a palindrome (2303230323032).

It can be divided in two parts, 1202120 and 111011, that added together give a palindrome (1313131).

The spelling of 1202120111011 in words is "one trillion, two hundred two billion, one hundred twenty million, one hundred eleven thousand, eleven".