20400200022 has 64 divisors (see below), whose sum is σ = 45506880000. Its totient is φ = 6058851840.

The previous prime is 20400200011. The next prime is 20400200033. The reversal of 20400200022 is 22000200402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20400200011) and next prime (20400200033).

It is a junction number, because it is equal to n+sod(n) for n = 20400199980 and 20400200007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3545604 + ... + 3551352.

It is an arithmetic number, because the mean of its divisors is an integer number (711045000).

Almost surely, 2^20400200022 is an apocalyptic number.

20400200022 is an abundant number, since it is smaller than the sum of its proper divisors (25106679978).

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

20400200022 is a wasteful number, since it uses less digits than its factorization.

20400200022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7621.

The product of its (nonzero) digits is 64, while the sum is 12.

Adding to 20400200022 its reverse (22000200402), we get a palindrome (42400400424).

The spelling of 20400200022 in words is "twenty billion, four hundred million, two hundred thousand, twenty-two".