1002121200111 has 4 divisors (see below), whose sum is σ = 1336161600152. Its totient is φ = 668080800072.

The previous prime is 1002121200109. The next prime is 1002121200139. The reversal of 1002121200111 is 1110021212001.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1002121200111 - 2¹ = 1002121200109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002121100111) 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, 167020200016 + ... + 167020200021.

It is an arithmetic number, because the mean of its divisors is an integer number (334040400038).

Almost surely, 2^{1002121200111} is an apocalyptic number.

1002121200111 is a deficient number, since it is larger than the sum of its proper divisors (334040400041).

1002121200111 is an equidigital number, since it uses as much as digits as its factorization.

1002121200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334040400040.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1002121200111 its reverse (1110021212001), we get a palindrome (2112142412112).

It can be divided in two parts, 10021212001 and 11, that multiplied together give a palindrome (110233332011).

The spelling of 1002121200111 in words is "one trillion, two billion, one hundred twenty-one million, two hundred thousand, one hundred eleven".