22401012021 has 16 divisors (see below), whose sum is σ = 31291680768. Its totient is φ = 14236556400.

The previous prime is 22401011999. The next prime is 22401012059. The reversal of 22401012021 is 12021010422.

It is not a de Polignac number, because 22401012021 - 2²¹ = 22398914869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22401012061) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1791315 + ... + 1803776.

It is an arithmetic number, because the mean of its divisors is an integer number (1955730048).

Almost surely, 2^22401012021 is an apocalyptic number.

It is an amenable number.

22401012021 is a deficient number, since it is larger than the sum of its proper divisors (8890668747).

22401012021 is a wasteful number, since it uses less digits than its factorization.

22401012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3595192.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22401012021 its reverse (12021010422), we get a palindrome (34422022443).

The spelling of 22401012021 in words is "twenty-two billion, four hundred one million, twelve thousand, twenty-one".