210421203420412 has 12 divisors (see below), whose sum is σ = 368341157184840. Its totient is φ = 105180872796176.

The previous prime is 210421203420391. The next prime is 210421203420419. The reversal of 210421203420412 is 214024302124012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210421203420419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7432212583 + ... + 7432240894.

It is an arithmetic number, because the mean of its divisors is an integer number (30695096432070).

Almost surely, 2^{210421203420412} is an apocalyptic number.

It is an amenable number.

210421203420412 is a deficient number, since it is larger than the sum of its proper divisors (157919953764428).

210421203420412 is a wasteful number, since it uses less digits than its factorization.

210421203420412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14864457020 (or 14864457018 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 210421203420412 its reverse (214024302124012), we get a palindrome (424445505544424).

The spelling of 210421203420412 in words is "two hundred ten trillion, four hundred twenty-one billion, two hundred three million, four hundred twenty thousand, four hundred twelve".