22455055421 has 16 divisors (see below), whose sum is σ = 23896414080. Its totient is φ = 21027340800.

The previous prime is 22455055331. The next prime is 22455055451. The reversal of 22455055421 is 12455055422.

It is a de Polignac number, because none of the positive numbers 2^k-22455055421 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 (22455055451) 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, 3133040 + ... + 3140198.

It is an arithmetic number, because the mean of its divisors is an integer number (1493525880).

Almost surely, 2^22455055421 is an apocalyptic number.

It is an amenable number.

22455055421 is a deficient number, since it is larger than the sum of its proper divisors (1441358659).

22455055421 is a wasteful number, since it uses less digits than its factorization.

22455055421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8084.

The product of its (nonzero) digits is 80000, while the sum is 35.

Subtracting from 22455055421 its reverse (12455055422), we obtain a palindrome (9999999999).

The spelling of 22455055421 in words is "twenty-two billion, four hundred fifty-five million, fifty-five thousand, four hundred twenty-one".