501213450221331 has 4 divisors (see below), whose sum is σ = 668284600295112. Its totient is φ = 334142300147552.

The previous prime is 501213450221329. The next prime is 501213450221381. The reversal of 501213450221331 is 133122054312105.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 501213450221331 - 2¹ = 501213450221329 is a prime.

It is a super-2 number, since 2×501213450221331² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 501213450221292 and 501213450221301.

It is not an unprimeable number, because it can be changed into a prime (501213450221381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83535575036886 + ... + 83535575036891.

It is an arithmetic number, because the mean of its divisors is an integer number (167071150073778).

Almost surely, 2^{501213450221331} is an apocalyptic number.

501213450221331 is a deficient number, since it is larger than the sum of its proper divisors (167071150073781).

501213450221331 is a wasteful number, since it uses less digits than its factorization.

501213450221331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167071150073780.

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 501213450221331 in words is "five hundred one trillion, two hundred thirteen billion, four hundred fifty million, two hundred twenty-one thousand, three hundred thirty-one".