21224423211401 has 8 divisors (see below), whose sum is σ = 22375232707584. Its totient is φ = 20102748132960.

The previous prime is 21224423211367. The next prime is 21224423211413. The reversal of 21224423211401 is 10411232442212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21224423211401 - 2¹⁰ = 21224423210377 is a prime.

It is a super-2 number, since 2×21224423211401² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21224423211461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7283602940 + ... + 7283605853.

It is an arithmetic number, because the mean of its divisors is an integer number (2796904088448).

Almost surely, 2^{21224423211401} is an apocalyptic number.

It is an amenable number.

21224423211401 is a deficient number, since it is larger than the sum of its proper divisors (1150809496183).

21224423211401 is a wasteful number, since it uses less digits than its factorization.

21224423211401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14567208871.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 21224423211401 its reverse (10411232442212), we get a palindrome (31635655653613).

The spelling of 21224423211401 in words is "twenty-one trillion, two hundred twenty-four billion, four hundred twenty-three million, two hundred eleven thousand, four hundred one".