4021221012231 has 8 divisors (see below), whose sum is σ = 5361802915824. Its totient is φ = 2680726558400.

The previous prime is 4021221012217. The next prime is 4021221012253. The reversal of 4021221012231 is 1322101221204.

It is a happy number.

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 4021221012231 - 2⁵ = 4021221012199 is a prime.

It is a super-2 number, since 2×4021221012231² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4021221012198 and 4021221012207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021221012271) 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, 21755070 + ... + 21939131.

It is an arithmetic number, because the mean of its divisors is an integer number (670225364478).

Almost surely, 2^{4021221012231} is an apocalyptic number.

4021221012231 is a deficient number, since it is larger than the sum of its proper divisors (1340581903593).

4021221012231 is a wasteful number, since it uses less digits than its factorization.

4021221012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43724881.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 4021221012231 its reverse (1322101221204), we get a palindrome (5343322233435).

The spelling of 4021221012231 in words is "four trillion, twenty-one billion, two hundred twenty-one million, twelve thousand, two hundred thirty-one".