20422221294 has 16 divisors (see below), whose sum is σ = 40861204560. Its totient is φ = 6804613440.

The previous prime is 20422221277. The next prime is 20422221301. The reversal of 20422221294 is 49212222402.

It is a super-2 number, since 2×20422221294² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682549 + ... + 711840.

It is an arithmetic number, because the mean of its divisors is an integer number (2553825285).

Almost surely, 2^20422221294 is an apocalyptic number.

20422221294 is an abundant number, since it is smaller than the sum of its proper divisors (20438983266).

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

20422221294 is a wasteful number, since it uses less digits than its factorization.

20422221294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396835.

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 20422221294 its reverse (49212222402), we get a palindrome (69634443696).

The spelling of 20422221294 in words is "twenty billion, four hundred twenty-two million, two hundred twenty-one thousand, two hundred ninety-four".