103721120554 has 4 divisors (see below), whose sum is σ = 155581680834. Its totient is φ = 51860560276.

The previous prime is 103721120537. The next prime is 103721120567. The reversal of 103721120554 is 455021127301.

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

It can be written as a sum of positive squares in only one way, i.e., 64940877225 + 38780243329 = 254835^2 + 196927^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25930280137 + ... + 25930280140.

Almost surely, 2^103721120554 is an apocalyptic number.

103721120554 is a deficient number, since it is larger than the sum of its proper divisors (51860560280).

103721120554 is an equidigital number, since it uses as much as digits as its factorization.

103721120554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51860560279.

The product of its (nonzero) digits is 8400, while the sum is 31.

Adding to 103721120554 its reverse (455021127301), we get a palindrome (558742247855).

The spelling of 103721120554 in words is "one hundred three billion, seven hundred twenty-one million, one hundred twenty thousand, five hundred fifty-four".