402212010122 has 16 divisors (see below), whose sum is σ = 653482748520. Its totient is φ = 184563268032.

The previous prime is 402212010073. The next prime is 402212010127. The reversal of 402212010122 is 221010212204.

It can be written as a sum of positive squares in 4 ways, for example, as 220786274641 + 181425735481 = 469879^2 + 425941^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 402212010122.

It is not an unprimeable number, because it can be changed into a prime (402212010127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44705597 + ... + 44714592.

Almost surely, 2^402212010122 is an apocalyptic number.

402212010122 is a deficient number, since it is larger than the sum of its proper divisors (251270738398).

402212010122 is a wasteful number, since it uses less digits than its factorization.

402212010122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89420377.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 402212010122 its reverse (221010212204), we get a palindrome (623222222326).

The spelling of 402212010122 in words is "four hundred two billion, two hundred twelve million, ten thousand, one hundred twenty-two".