22404420031212 has 18 divisors (see below), whose sum is σ = 56633395078988. Its totient is φ = 7468140010392.

The previous prime is 22404420031139. The next prime is 22404420031243. The reversal of 22404420031212 is 21213002440422.

It is a happy number.

22404420031212 is a `hidden beast` number, since 2 + 2 + 4 + 0 + 442 + 0 + 0 + 3 + 1 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 311172500398 + ... + 311172500469.

Almost surely, 2^{22404420031212} is an apocalyptic number.

It is an amenable number.

22404420031212 is an abundant number, since it is smaller than the sum of its proper divisors (34228975047776).

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

22404420031212 is a wasteful number, since it uses less digits than its factorization.

22404420031212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622345000877 (or 622345000872 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 22404420031212 its reverse (21213002440422), we get a palindrome (43617422471634).

The spelling of 22404420031212 in words is "twenty-two trillion, four hundred four billion, four hundred twenty million, thirty-one thousand, two hundred twelve".