102203021213121 has 4 divisors (see below), whose sum is σ = 136270694950832. Its totient is φ = 68135347475412.

The previous prime is 102203021213119. The next prime is 102203021213123. The reversal of 102203021213121 is 121312120302201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (102203021213119) and next prime (102203021213123).

It is not a de Polignac number, because 102203021213121 - 2¹ = 102203021213119 is a prime.

It is a super-2 number, since 2×102203021213121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102203021213123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17033836868851 + ... + 17033836868856.

It is an arithmetic number, because the mean of its divisors is an integer number (34067673737708).

Almost surely, 2^{102203021213121} is an apocalyptic number.

It is an amenable number.

102203021213121 is a deficient number, since it is larger than the sum of its proper divisors (34067673737711).

102203021213121 is an equidigital number, since it uses as much as digits as its factorization.

102203021213121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34067673737710.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 102203021213121 its reverse (121312120302201), we get a palindrome (223515141515322).

The spelling of 102203021213121 in words is "one hundred two trillion, two hundred three billion, twenty-one million, two hundred thirteen thousand, one hundred twenty-one".