20404011222 has 96 divisors (see below), whose sum is σ = 50848200000. Its totient is φ = 5792477184.

The previous prime is 20404011211. The next prime is 20404011233. The reversal of 20404011222 is 22211040402.

20404011222 is a `hidden beast` number, since 2 + 0 + 40 + 401 + 1 + 222 = 666.

It is an interprime number because it is at equal distance from previous prime (20404011211) and next prime (20404011233).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20404011195 and 20404011204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16335654 + ... + 16336902.

It is an arithmetic number, because the mean of its divisors is an integer number (529668750).

Almost surely, 2^20404011222 is an apocalyptic number.

20404011222 is an abundant number, since it is smaller than the sum of its proper divisors (30444188778).

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

20404011222 is a wasteful number, since it uses less digits than its factorization.

20404011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990 (or 1987 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20404011222 its reverse (22211040402), we get a palindrome (42615051624).

The spelling of 20404011222 in words is "twenty billion, four hundred four million, eleven thousand, two hundred twenty-two".