402211231001 has 4 divisors (see below), whose sum is σ = 402212819892. Its totient is φ = 402209642112.

The previous prime is 402211230979. The next prime is 402211231063. The reversal of 402211231001 is 100132112204.

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 280954062601 + 121257168400 = 530051^2 + 348220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402211231001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402211233001) 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 3 ways as a sum of consecutive naturals, for example, 320480 + ... + 952433.

It is an arithmetic number, because the mean of its divisors is an integer number (100553204973).

Almost surely, 2^402211231001 is an apocalyptic number.

It is an amenable number.

402211231001 is a deficient number, since it is larger than the sum of its proper divisors (1588891).

402211231001 is a wasteful number, since it uses less digits than its factorization.

402211231001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588890.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 402211231001 its reverse (100132112204), we get a palindrome (502343343205).

The spelling of 402211231001 in words is "four hundred two billion, two hundred eleven million, two hundred thirty-one thousand, one".