421001102 has 4 divisors (see below), whose sum is σ = 631501656. Its totient is φ = 210500550.

The previous prime is 421001099. The next prime is 421001123. The reversal of 421001102 is 201100124.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105250274 + ... + 105250277.

It is an arithmetic number, because the mean of its divisors is an integer number (157875414).

Almost surely, 2^421001102 is an apocalyptic number.

421001102 is a deficient number, since it is larger than the sum of its proper divisors (210500554).

421001102 is a wasteful number, since it uses less digits than its factorization.

421001102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210500553.

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

The square root of 421001102 is about 20518.3113827625. The cubic root of 421001102 is about 749.4817765269.

Adding to 421001102 its reverse (201100124), we get a palindrome (622101226).

The spelling of 421001102 in words is "four hundred twenty-one million, one thousand, one hundred two".