222121144055025 has 48 divisors (see below), whose sum is σ = 414960781435200. Its totient is φ = 116456735393280.

The previous prime is 222121144055023. The next prime is 222121144055051. The reversal of 222121144055025 is 520550441121222.

It is a happy number.

222121144055025 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 2 + 1 + 144 + 0 + 5 + 502 + 5 = 666.

222121144055025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222121144055025 - 2¹ = 222121144055023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222121144055021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2788675104 + ... + 2788754753.

It is an arithmetic number, because the mean of its divisors is an integer number (8645016279900).

Almost surely, 2^{222121144055025} is an apocalyptic number.

222121144055025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222121144055025 is a deficient number, since it is larger than the sum of its proper divisors (192839637380175).

222121144055025 is a wasteful number, since it uses less digits than its factorization.

222121144055025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5577429935 (or 5577429924 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

Adding to 222121144055025 its reverse (520550441121222), we get a palindrome (742671585176247).

The spelling of 222121144055025 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one hundred forty-four million, fifty-five thousand, twenty-five".