20214220455 has 96 divisors (see below), whose sum is σ = 41212342080. Its totient is φ = 9036195840.

The previous prime is 20214220423. The next prime is 20214220457. The reversal of 20214220455 is 55402241202.

20214220455 is a `hidden beast` number, since 202 + 1 + 4 + 2 + 2 + 0 + 455 = 666.

It is not a de Polignac number, because 20214220455 - 2⁵ = 20214220423 is a prime.

It is a super-2 number, since 2×20214220455² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20214220457) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8293497 + ... + 8295933.

It is an arithmetic number, because the mean of its divisors is an integer number (429295230).

Almost surely, 2^20214220455 is an apocalyptic number.

20214220455 is an abundant number, since it is smaller than the sum of its proper divisors (20998121625).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20214220455 is a wasteful number, since it uses less digits than its factorization.

20214220455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3761 (or 3758 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 20214220455 its reverse (55402241202), we get a palindrome (75616461657).

The spelling of 20214220455 in words is "twenty billion, two hundred fourteen million, two hundred twenty thousand, four hundred fifty-five".