1200102002101 has 2 divisors, whose sum is σ = 1200102002102. Its totient is φ = 1200102002100.

The previous prime is 1200102002083. The next prime is 1200102002131. The reversal of 1200102002101 is 1012002010021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1114692524100 + 85409478001 = 1055790^2 + 292249^2 .

It is an emirp because it is prime and its reverse (1012002010021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1200102002101 - 2¹⁵ = 1200101969333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200102002131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600051001050 + 600051001051.

It is an arithmetic number, because the mean of its divisors is an integer number (600051001051).

Almost surely, 2^{1200102002101} is an apocalyptic number.

It is an amenable number.

1200102002101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200102002101 is an equidigital number, since it uses as much as digits as its factorization.

1200102002101 is an evil number, because the sum of its binary digits is even.

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

Adding to 1200102002101 its reverse (1012002010021), we get a palindrome (2212104012122).

The spelling of 1200102002101 in words is "one trillion, two hundred billion, one hundred two million, two thousand, one hundred one".