402141130221121 has 4 divisors (see below), whose sum is σ = 402141174857044. Its totient is φ = 402141085585200.

The previous prime is 402141130221119. The next prime is 402141130221227. The reversal of 402141130221121 is 121122031141204.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 166036393731121 + 236104736490000 = 12885511^2 + 15365700^2 .

It is a cyclic number.

It is not a de Polignac number, because 402141130221121 - 2¹ = 402141130221119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402141130227121) 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, 3534150 + ... + 28579231.

It is an arithmetic number, because the mean of its divisors is an integer number (100535293714261).

Almost surely, 2^{402141130221121} is an apocalyptic number.

It is an amenable number.

402141130221121 is a deficient number, since it is larger than the sum of its proper divisors (44635923).

402141130221121 is a wasteful number, since it uses less digits than its factorization.

402141130221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44635922.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 402141130221121 its reverse (121122031141204), we get a palindrome (523263161362325).

The spelling of 402141130221121 in words is "four hundred two trillion, one hundred forty-one billion, one hundred thirty million, two hundred twenty-one thousand, one hundred twenty-one".