402122101231 has 4 divisors (see below), whose sum is σ = 402123397392. Its totient is φ = 402120805072.

The previous prime is 402122101229. The next prime is 402122101247. The reversal of 402122101231 is 132101221204.

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 is a cyclic number.

It is not a de Polignac number, because 402122101231 - 2¹ = 402122101229 is a prime.

It is a super-2 number, since 2×402122101231² (a number of 24 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 = 402122101199 and 402122101208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402122101531) 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, 123435 + ... + 905251.

It is an arithmetic number, because the mean of its divisors is an integer number (100530849348).

Almost surely, 2^402122101231 is an apocalyptic number.

402122101231 is a deficient number, since it is larger than the sum of its proper divisors (1296161).

402122101231 is an equidigital number, since it uses as much as digits as its factorization.

402122101231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296160.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 402122101231 its reverse (132101221204), we get a palindrome (534223322435).

The spelling of 402122101231 in words is "four hundred two billion, one hundred twenty-two million, one hundred one thousand, two hundred thirty-one".