254221122451 has 4 divisors (see below), whose sum is σ = 254237255712. Its totient is φ = 254204989192.

The previous prime is 254221122413. The next prime is 254221122457. The reversal of 254221122451 is 154221122452.

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

It is a cyclic number.

It is not a de Polignac number, because 254221122451 - 2¹⁷ = 254220991379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254221122457) 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, 8042971 + ... + 8074516.

It is an arithmetic number, because the mean of its divisors is an integer number (63559313928).

Almost surely, 2^254221122451 is an apocalyptic number.

254221122451 is a deficient number, since it is larger than the sum of its proper divisors (16133261).

254221122451 is a wasteful number, since it uses less digits than its factorization.

254221122451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16133260.

The product of its digits is 12800, while the sum is 31.

Subtracting from 254221122451 its reverse (154221122452), we obtain a palindrome (99999999999).

The spelling of 254221122451 in words is "two hundred fifty-four billion, two hundred twenty-one million, one hundred twenty-two thousand, four hundred fifty-one".