212401402 has 16 divisors (see below), whose sum is σ = 327803112. Its totient is φ = 103156480.

The previous prime is 212401363. The next prime is 212401411. The reversal of 212401402 is 204104212.

It can be written as a sum of positive squares in 4 ways, for example, as 51136801 + 161264601 = 7151^2 + 12699^2 .

It is a super-2 number, since 2×212401402² = 90228711143131208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13548 + ... + 24664.

Almost surely, 2^212401402 is an apocalyptic number.

212401402 is a deficient number, since it is larger than the sum of its proper divisors (115401710).

212401402 is a wasteful number, since it uses less digits than its factorization.

212401402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11393.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 212401402 is about 14573.9974612321. The cubic root of 212401402 is about 596.6492875241.

Adding to 212401402 its reverse (204104212), we get a palindrome (416505614).

The spelling of 212401402 in words is "two hundred twelve million, four hundred one thousand, four hundred two".