22001312420244 has 48 divisors (see below), whose sum is σ = 58582073121600. Its totient is φ = 7135560783648.

The previous prime is 22001312420209. The next prime is 22001312420261. The reversal of 22001312420244 is 44202421310022.

It is a happy number.

22001312420244 is a `hidden beast` number, since 2 + 200 + 1 + 3 + 12 + 420 + 24 + 4 = 666.

It is a super-2 number, since 2×22001312420244² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2752912974 + ... + 2752920965.

It is an arithmetic number, because the mean of its divisors is an integer number (1220459856700).

Almost surely, 2^{22001312420244} is an apocalyptic number.

It is an amenable number.

22001312420244 is an abundant number, since it is smaller than the sum of its proper divisors (36580760701356).

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

22001312420244 is a wasteful number, since it uses less digits than its factorization.

22001312420244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505833989 (or 5505833981 counting only the distinct ones).

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

Adding to 22001312420244 its reverse (44202421310022), we get a palindrome (66203733730266).

It can be divided in two parts, 22001312 and 420244, that added together give a triangular number (22421556 = T₆₆₉₆).

The spelling of 22001312420244 in words is "twenty-two trillion, one billion, three hundred twelve million, four hundred twenty thousand, two hundred forty-four".