213421440302 has 24 divisors (see below), whose sum is σ = 377499999456. Its totient is φ = 90213365088.

The previous prime is 213421440293. The next prime is 213421440343. The reversal of 213421440302 is 203044124312.

It is a super-2 number, since 2×213421440302² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14909078 + ... + 14923385.

It is an arithmetic number, because the mean of its divisors is an integer number (15729166644).

Almost surely, 2^213421440302 is an apocalyptic number.

213421440302 is a deficient number, since it is larger than the sum of its proper divisors (164078559154).

213421440302 is a wasteful number, since it uses less digits than its factorization.

213421440302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29832552 (or 29832545 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 213421440302 its reverse (203044124312), we get a palindrome (416465564614).

The spelling of 213421440302 in words is "two hundred thirteen billion, four hundred twenty-one million, four hundred forty thousand, three hundred two".