103206054221 has 4 divisors (see below), whose sum is σ = 104227896444. Its totient is φ = 102184212000.

The previous prime is 103206054199. The next prime is 103206054257. The reversal of 103206054221 is 122450602301.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 101168524900 + 2037529321 = 318070^2 + 45139^2 .

It is a cyclic number.

It is not a de Polignac number, because 103206054221 - 2⁶ = 103206054157 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 (103206054521) 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, 510920960 + ... + 510921161.

It is an arithmetic number, because the mean of its divisors is an integer number (26056974111).

Almost surely, 2^103206054221 is an apocalyptic number.

It is an amenable number.

103206054221 is a deficient number, since it is larger than the sum of its proper divisors (1021842223).

103206054221 is a wasteful number, since it uses less digits than its factorization.

103206054221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021842222.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 103206054221 its reverse (122450602301), we get a palindrome (225656656522).

The spelling of 103206054221 in words is "one hundred three billion, two hundred six million, fifty-four thousand, two hundred twenty-one".