20100401233321 has 4 divisors (see below), whose sum is σ = 20100414161412. Its totient is φ = 20100388305232.

The previous prime is 20100401233291. The next prime is 20100401233343. The reversal of 20100401233321 is 12333210400102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20009160385600 + 91240847721 = 4473160^2 + 302061^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100401233321 - 2⁴³ = 11304308211113 is a prime.

It is a super-2 number, since 2×20100401233321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20100401233292 and 20100401233301.

It is not an unprimeable number, because it can be changed into a prime (20100401237321) 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, 3752806 + ... + 7367791.

It is an arithmetic number, because the mean of its divisors is an integer number (5025103540353).

Almost surely, 2^{20100401233321} is an apocalyptic number.

It is an amenable number.

20100401233321 is a deficient number, since it is larger than the sum of its proper divisors (12928091).

20100401233321 is a wasteful number, since it uses less digits than its factorization.

20100401233321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12928090.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20100401233321 its reverse (12333210400102), we get a palindrome (32433611633423).

The spelling of 20100401233321 in words is "twenty trillion, one hundred billion, four hundred one million, two hundred thirty-three thousand, three hundred twenty-one".