210421420042101 has 8 divisors (see below), whose sum is σ = 281628668650560. Its totient is φ = 139747559064192.

The previous prime is 210421420042081. The next prime is 210421420042109. The reversal of 210421420042101 is 101240024124012.

It is a happy number.

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

It is not a de Polignac number, because 210421420042101 - 2⁹ = 210421420041589 is a prime.

It is a super-2 number, since 2×210421420042101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210421420042109) 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, 133346906716 + ... + 133346908293.

It is an arithmetic number, because the mean of its divisors is an integer number (35203583581320).

Almost surely, 2^{210421420042101} is an apocalyptic number.

It is an amenable number.

210421420042101 is a deficient number, since it is larger than the sum of its proper divisors (71207248608459).

210421420042101 is a wasteful number, since it uses less digits than its factorization.

210421420042101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266693815275.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 210421420042101 its reverse (101240024124012), we get a palindrome (311661444166113).

The spelling of 210421420042101 in words is "two hundred ten trillion, four hundred twenty-one billion, four hundred twenty million, forty-two thousand, one hundred one".