102121020003 has 4 divisors (see below), whose sum is σ = 136161360008. Its totient is φ = 68080680000.

The previous prime is 102121019969. The next prime is 102121020017. The reversal of 102121020003 is 300020121201.

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

It is not a de Polignac number, because 102121020003 - 2¹⁴ = 102121003619 is a prime.

It is a super-2 number, since 2×102121020003² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102121020403) 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, 17020169998 + ... + 17020170003.

It is an arithmetic number, because the mean of its divisors is an integer number (34040340002).

Almost surely, 2^102121020003 is an apocalyptic number.

102121020003 is a deficient number, since it is larger than the sum of its proper divisors (34040340005).

102121020003 is an equidigital number, since it uses as much as digits as its factorization.

102121020003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34040340004.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 102121020003 its reverse (300020121201), we get a palindrome (402141141204).

The spelling of 102121020003 in words is "one hundred two billion, one hundred twenty-one million, twenty thousand, three".