213221123402 has 24 divisors (see below), whose sum is σ = 372065055840. Its totient is φ = 91376563320.

The previous prime is 213221123389. The next prime is 213221123419. The reversal of 213221123402 is 204321122312.

It is a super-3 number, since 3×213221123402³ (a number of 35 digits) contains 333 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 11 ways as a sum of consecutive naturals, for example, 4530749 + ... + 4577567.

It is an arithmetic number, because the mean of its divisors is an integer number (15502710660).

Almost surely, 2^213221123402 is an apocalyptic number.

213221123402 is a deficient number, since it is larger than the sum of its proper divisors (158843932438).

213221123402 is a wasteful number, since it uses less digits than its factorization.

213221123402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93306 (or 93299 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 213221123402 its reverse (204321122312), we get a palindrome (417542245714).

The spelling of 213221123402 in words is "two hundred thirteen billion, two hundred twenty-one million, one hundred twenty-three thousand, four hundred two".