103031221099 has 4 divisors (see below), whose sum is σ = 103493244736. Its totient is φ = 102569197464.

The previous prime is 103031221091. The next prime is 103031221123. The reversal of 103031221099 is 990122130301.

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

It is a cyclic number.

It is not a de Polignac number, because 103031221099 - 2³ = 103031221091 is a prime.

It is a super-4 number, since 4×103031221099⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103031221099.

It is not an unprimeable number, because it can be changed into a prime (103031221091) 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, 231011484 + ... + 231011929.

It is an arithmetic number, because the mean of its divisors is an integer number (25873311184).

Almost surely, 2^103031221099 is an apocalyptic number.

103031221099 is a deficient number, since it is larger than the sum of its proper divisors (462023637).

103031221099 is an equidigital number, since it uses as much as digits as its factorization.

103031221099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462023636.

The product of its (nonzero) digits is 2916, while the sum is 31.

The spelling of 103031221099 in words is "one hundred three billion, thirty-one million, two hundred twenty-one thousand, ninety-nine".