31222222001421 has 32 divisors (see below), whose sum is σ = 45861582440448. Its totient is φ = 18736302445440.

The previous prime is 31222222001393. The next prime is 31222222001441. The reversal of 31222222001421 is 12410022222213.

It is not a de Polignac number, because 31222222001421 - 2¹¹ = 31222221999373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31222222001391 and 31222222001400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222222001441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4818940 + ... + 9255626.

It is an arithmetic number, because the mean of its divisors is an integer number (1433174451264).

Almost surely, 2^{31222222001421} is an apocalyptic number.

It is an amenable number.

31222222001421 is a deficient number, since it is larger than the sum of its proper divisors (14639360439027).

31222222001421 is a wasteful number, since it uses less digits than its factorization.

31222222001421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4438801.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 31222222001421 its reverse (12410022222213), we get a palindrome (43632244223634).

The spelling of 31222222001421 in words is "thirty-one trillion, two hundred twenty-two billion, two hundred twenty-two million, one thousand, four hundred twenty-one".