98777532222221 has 16 divisors (see below), whose sum is σ = 103955740417200. Its totient is φ = 93732896632320.

The previous prime is 98777532222217. The next prime is 98777532222227. The reversal of 98777532222221 is 12222223577789.

It can be written as a sum of positive squares in 8 ways, for example, as 24186586296196 + 74590945926025 = 4917986^2 + 8636605^2 .

It is a cyclic number.

It is not a de Polignac number, because 98777532222221 - 2² = 98777532222217 is a prime.

It is a super-3 number, since 3×98777532222221³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98777532222227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6112946 + ... + 15327203.

It is an arithmetic number, because the mean of its divisors is an integer number (6497233776075).

Almost surely, 2^{98777532222221} is an apocalyptic number.

It is an amenable number.

98777532222221 is a deficient number, since it is larger than the sum of its proper divisors (5178208194979).

98777532222221 is a wasteful number, since it uses less digits than its factorization.

98777532222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21443264.

The product of its digits is 23708160, while the sum is 59.

The spelling of 98777532222221 in words is "ninety-eight trillion, seven hundred seventy-seven billion, five hundred thirty-two million, two hundred twenty-two thousand, two hundred twenty-one".