221422005025677 has 20 divisors (see below), whose sum is σ = 332593642657276. Its totient is φ = 146799119344320.

The previous prime is 221422005025633. The next prime is 221422005025681. The reversal of 221422005025677 is 776520500224122.

221422005025677 is a `hidden beast` number, since 2 + 2 + 1 + 4 + 2 + 20 + 0 + 502 + 56 + 77 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 100894411033641 + 120527593992036 = 10044621^2 + 10978506^2 .

It is not a de Polignac number, because 221422005025677 - 2¹¹ = 221422005023629 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 (221422005027677) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7551380368 + ... + 7551409689.

Almost surely, 2^{221422005025677} is an apocalyptic number.

221422005025677 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

221422005025677 is a deficient number, since it is larger than the sum of its proper divisors (111171637631599).

221422005025677 is a wasteful number, since it uses less digits than its factorization.

221422005025677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15102790250 (or 15102790241 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 45.

Adding to 221422005025677 its reverse (776520500224122), we get a palindrome (997942505249799).

The spelling of 221422005025677 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, five million, twenty-five thousand, six hundred seventy-seven".