421020011 has 8 divisors (see below), whose sum is σ = 447639984. Its totient is φ = 394606080.

The previous prime is 421020007. The next prime is 421020029. The reversal of 421020011 is 110020124.

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

It is a cyclic number.

It is not a de Polignac number, because 421020011 - 2² = 421020007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421019974 and 421020001.

It is not an unprimeable number, because it can be changed into a prime (421020001) 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, 47285 + ... + 55478.

It is an arithmetic number, because the mean of its divisors is an integer number (55954998).

Almost surely, 2^421020011 is an apocalyptic number.

421020011 is a deficient number, since it is larger than the sum of its proper divisors (26619973).

421020011 is a wasteful number, since it uses less digits than its factorization.

421020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103021.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 421020011 is about 20518.7721611211. The cubic root of 421020011 is about 749.4929971933.

Adding to 421020011 its reverse (110020124), we get a palindrome (531040135).

The spelling of 421020011 in words is "four hundred twenty-one million, twenty thousand, eleven".