212143210220402 has 16 divisors (see below), whose sum is σ = 345151220073912. Its totient is φ = 97397169684480.

The previous prime is 212143210220401. The next prime is 212143210220411. The reversal of 212143210220402 is 204022012341212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 178079656933201 + 34063553287201 = 13344649^2 + 5836399^2 .

It is not an unprimeable number, because it can be changed into a prime (212143210220401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76091537423 + ... + 76091540210.

Almost surely, 2^{212143210220402} is an apocalyptic number.

212143210220402 is a deficient number, since it is larger than the sum of its proper divisors (133008009853510).

212143210220402 is a wasteful number, since it uses less digits than its factorization.

212143210220402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152183077693.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 212143210220402 its reverse (204022012341212), we get a palindrome (416165222561614).

The spelling of 212143210220402 in words is "two hundred twelve trillion, one hundred forty-three billion, two hundred ten million, two hundred twenty thousand, four hundred two".