420021401111 has 8 divisors (see below), whose sum is σ = 452335781520. Its totient is φ = 387707740992.

The previous prime is 420021401101. The next prime is 420021401117. The reversal of 420021401111 is 111104120024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420021401111 - 2³⁰ = 418947659287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420021401111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420021401117) 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, 2106416 + ... + 2297178.

It is an arithmetic number, because the mean of its divisors is an integer number (56541972690).

Almost surely, 2^420021401111 is an apocalyptic number.

420021401111 is a deficient number, since it is larger than the sum of its proper divisors (32314380409).

420021401111 is a wasteful number, since it uses less digits than its factorization.

420021401111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360145.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 420021401111 its reverse (111104120024), we get a palindrome (531125521135).

The spelling of 420021401111 in words is "four hundred twenty billion, twenty-one million, four hundred one thousand, one hundred eleven".