401333222121 has 64 divisors (see below), whose sum is σ = 615694700544. Its totient is φ = 230599353600.

The previous prime is 401333222107. The next prime is 401333222137. The reversal of 401333222121 is 121222333104.

It is not a de Polignac number, because 401333222121 - 2¹⁰ = 401333221097 is a prime.

It is a super-2 number, since 2×401333222121² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 401333222091 and 401333222100.

It is not an unprimeable number, because it can be changed into a prime (401333222221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 122692716 + ... + 122695986.

It is an arithmetic number, because the mean of its divisors is an integer number (9620229696).

Almost surely, 2^401333222121 is an apocalyptic number.

It is an amenable number.

401333222121 is a deficient number, since it is larger than the sum of its proper divisors (214361478423).

401333222121 is a wasteful number, since it uses less digits than its factorization.

401333222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6534.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 401333222121 its reverse (121222333104), we get a palindrome (522555555225).

The spelling of 401333222121 in words is "four hundred one billion, three hundred thirty-three million, two hundred twenty-two thousand, one hundred twenty-one".