1001224022421 has 8 divisors (see below), whose sum is σ = 1525674700864. Its totient is φ = 572128012800.

The previous prime is 1001224022399. The next prime is 1001224022467. The reversal of 1001224022421 is 1242204221001.

1001224022421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1001224022421 - 2¹³ = 1001224014229 is a prime.

It is a super-2 number, since 2×1001224022421² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 47677334401 = 1001224022421 / (1 + 0 + 0 + 1 + 2 + 2 + 4 + 0 + 2 + 2 + 4 + 2 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001224022621) 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, 23838667180 + ... + 23838667221.

It is an arithmetic number, because the mean of its divisors is an integer number (190709337608).

Almost surely, 2^{1001224022421} is an apocalyptic number.

It is an amenable number.

1001224022421 is a deficient number, since it is larger than the sum of its proper divisors (524450678443).

1001224022421 is an equidigital number, since it uses as much as digits as its factorization.

1001224022421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47677334411.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 1001224022421 its reverse (1242204221001), we get a palindrome (2243428243422).

The spelling of 1001224022421 in words is "one trillion, one billion, two hundred twenty-four million, twenty-two thousand, four hundred twenty-one".