420203020011111 has 6 divisors (see below), whose sum is σ = 606959917793840. Its totient is φ = 280135346674068.

The previous prime is 420203020011041. The next prime is 420203020011209. The reversal of 420203020011111 is 111110020302024.

420203020011111 is a `hidden beast` number, since 420 + 2 + 0 + 30 + 200 + 1 + 1 + 1 + 11 = 666.

It is not a de Polignac number, because 420203020011111 - 2²³ = 420203011622503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420203020091111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23344612222831 + ... + 23344612222848.

Almost surely, 2^{420203020011111} is an apocalyptic number.

420203020011111 is a deficient number, since it is larger than the sum of its proper divisors (186756897782729).

420203020011111 is a wasteful number, since it uses less digits than its factorization.

420203020011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46689224445685 (or 46689224445682 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 420203020011111 its reverse (111110020302024), we get a palindrome (531313040313135).

The spelling of 420203020011111 in words is "four hundred twenty trillion, two hundred three billion, twenty million, eleven thousand, one hundred eleven".