22021263654 has 32 divisors (see below), whose sum is σ = 47507891424. Its totient is φ = 6764705280.

The previous prime is 22021263647. The next prime is 22021263683. The reversal of 22021263654 is 45636212022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182467 + ... + 278094.

It is an arithmetic number, because the mean of its divisors is an integer number (1484621607).

Almost surely, 2^22021263654 is an apocalyptic number.

22021263654 is an abundant number, since it is smaller than the sum of its proper divisors (25486627770).

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

22021263654 is a wasteful number, since it uses less digits than its factorization.

22021263654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461192.

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 22021263654 its reverse (45636212022), we get a palindrome (67657475676).

The spelling of 22021263654 in words is "twenty-two billion, twenty-one million, two hundred sixty-three thousand, six hundred fifty-four".