102120121210103 has 4 divisors (see below), whose sum is σ = 102120299924808. Its totient is φ = 102119942495400.

The previous prime is 102120121210097. The next prime is 102120121210109. The reversal of 102120121210103 is 301012121021201.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (102120121210097) and next prime (102120121210109).

It is a cyclic number.

It is not a de Polignac number, because 102120121210103 - 2¹⁸ = 102120120947959 is a prime.

It is a super-2 number, since 2×102120121210103² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120121210109) 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, 88497473 + ... + 89643978.

It is an arithmetic number, because the mean of its divisors is an integer number (25530074981202).

Almost surely, 2^{102120121210103} is an apocalyptic number.

102120121210103 is a deficient number, since it is larger than the sum of its proper divisors (178714705).

102120121210103 is an equidigital number, since it uses as much as digits as its factorization.

102120121210103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178714704.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 102120121210103 its reverse (301012121021201), we get a palindrome (403132242231304).

The spelling of 102120121210103 in words is "one hundred two trillion, one hundred twenty billion, one hundred twenty-one million, two hundred ten thousand, one hundred three".