1200102020011 has 4 divisors (see below), whose sum is σ = 1200624487272. Its totient is φ = 1199579552752.

The previous prime is 1200102019937. The next prime is 1200102020017. The reversal of 1200102020011 is 1100202010021.

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 1200102020011 - 2⁹ = 1200102019499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1200102020011.

It is not an unprimeable number, because it can be changed into a prime (1200102020017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261230185 + ... + 261234778.

It is an arithmetic number, because the mean of its divisors is an integer number (300156121818).

Almost surely, 2^{1200102020011} is an apocalyptic number.

1200102020011 is a deficient number, since it is larger than the sum of its proper divisors (522467261).

1200102020011 is an equidigital number, since it uses as much as digits as its factorization.

1200102020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522467260.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1200102020011 its reverse (1100202010021), we get a palindrome (2300304030032).

The spelling of 1200102020011 in words is "one trillion, two hundred billion, one hundred two million, twenty thousand, eleven".