20551343222 has 32 divisors (see below), whose sum is σ = 31779324000. Its totient is φ = 9964297728.

The previous prime is 20551343221. The next prime is 20551343227. The reversal of 20551343222 is 22234315502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20551343221) 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, 2251604 + ... + 2260712.

It is an arithmetic number, because the mean of its divisors is an integer number (993103875).

Almost surely, 2^20551343222 is an apocalyptic number.

20551343222 is a deficient number, since it is larger than the sum of its proper divisors (11227980778).

20551343222 is a wasteful number, since it uses less digits than its factorization.

20551343222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9440.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 20551343222 its reverse (22234315502), we get a palindrome (42785658724).

The spelling of 20551343222 in words is "twenty billion, five hundred fifty-one million, three hundred forty-three thousand, two hundred twenty-two".