98221031331221 has 4 divisors (see below), whose sum is σ = 98221655395500. Its totient is φ = 98220407266944.

The previous prime is 98221031331179. The next prime is 98221031331263. The reversal of 98221031331221 is 12213313012289.

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 (98221031331179) and next prime (98221031331263).

It can be written as a sum of positive squares in 2 ways, for example, as 40375667014225 + 57845364316996 = 6354185^2 + 7605614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98221031331221 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 (98221031331121) 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, 311795996 + ... + 312110853.

It is an arithmetic number, because the mean of its divisors is an integer number (24555413848875).

Almost surely, 2^{98221031331221} is an apocalyptic number.

It is an amenable number.

98221031331221 is a deficient number, since it is larger than the sum of its proper divisors (624064279).

98221031331221 is a wasteful number, since it uses less digits than its factorization.

98221031331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624064278.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 98221031331221 in words is "ninety-eight trillion, two hundred twenty-one billion, thirty-one million, three hundred thirty-one thousand, two hundred twenty-one".