402122124001 has 4 divisors (see below), whose sum is σ = 433054595092. Its totient is φ = 371189652912.

The previous prime is 402122123959. The next prime is 402122124017. The reversal of 402122124001 is 100421221204.

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 246532110400 + 155590013601 = 496520^2 + 394449^2 .

It is not a de Polignac number, because 402122124001 - 2¹³ = 402122115809 is a prime.

It is a super-2 number, since 2×402122124001² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402122124001.

It is not an unprimeable number, because it can be changed into a prime (402122124601) 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, 15466235526 + ... + 15466235551.

It is an arithmetic number, because the mean of its divisors is an integer number (108263648773).

Almost surely, 2^402122124001 is an apocalyptic number.

It is an amenable number.

402122124001 is a deficient number, since it is larger than the sum of its proper divisors (30932471091).

402122124001 is a wasteful number, since it uses less digits than its factorization.

402122124001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30932471090.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 402122124001 its reverse (100421221204), we get a palindrome (502543345205).

The spelling of 402122124001 in words is "four hundred two billion, one hundred twenty-two million, one hundred twenty-four thousand, one".