621226065121 has 32 divisors (see below), whose sum is σ = 669526663680. Its totient is φ = 574321219584.

The previous prime is 621226065101. The next prime is 621226065139. The reversal of 621226065121 is 121560622126.

It is not a de Polignac number, because 621226065121 - 2¹⁹ = 621225540833 is a prime.

It is a super-3 number, since 3×621226065121³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621226065101) 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, 321378271 + ... + 321380203.

It is an arithmetic number, because the mean of its divisors is an integer number (20922708240).

Almost surely, 2^621226065121 is an apocalyptic number.

It is an amenable number.

621226065121 is a deficient number, since it is larger than the sum of its proper divisors (48300598559).

621226065121 is a wasteful number, since it uses less digits than its factorization.

621226065121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225.

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 621226065121 its reverse (121560622126), we get a palindrome (742786687247).

The spelling of 621226065121 in words is "six hundred twenty-one billion, two hundred twenty-six million, sixty-five thousand, one hundred twenty-one".