20022221254 has 16 divisors (see below), whose sum is σ = 34433476128. Its totient is φ = 8553534912.

The previous prime is 20022221251. The next prime is 20022221273. The reversal of 20022221254 is 45212222002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022221251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2280217 + ... + 2288980.

It is an arithmetic number, because the mean of its divisors is an integer number (2152092258).

Almost surely, 2^20022221254 is an apocalyptic number.

20022221254 is a deficient number, since it is larger than the sum of its proper divisors (14411254874).

20022221254 is a wasteful number, since it uses less digits than its factorization.

20022221254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4569519.

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 20022221254 its reverse (45212222002), we get a palindrome (65234443256).

The spelling of 20022221254 in words is "twenty billion, twenty-two million, two hundred twenty-one thousand, two hundred fifty-four".