402111020130321 has 4 divisors (see below), whose sum is σ = 536148026840432. Its totient is φ = 268074013420212.

The previous prime is 402111020130277. The next prime is 402111020130329. The reversal of 402111020130321 is 123031020111204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 402111020130321 - 2⁹ = 402111020129809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402111020130329) 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 3 ways as a sum of consecutive naturals, for example, 67018503355051 + ... + 67018503355056.

It is an arithmetic number, because the mean of its divisors is an integer number (134037006710108).

Almost surely, 2^{402111020130321} is an apocalyptic number.

It is an amenable number.

402111020130321 is a deficient number, since it is larger than the sum of its proper divisors (134037006710111).

402111020130321 is a wasteful number, since it uses less digits than its factorization.

402111020130321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134037006710110.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 402111020130321 its reverse (123031020111204), we get a palindrome (525142040241525).

The spelling of 402111020130321 in words is "four hundred two trillion, one hundred eleven billion, twenty million, one hundred thirty thousand, three hundred twenty-one".