421210122611 has 4 divisors (see below), whose sum is σ = 423892989792. Its totient is φ = 418527255432.

The previous prime is 421210122587. The next prime is 421210122643. The reversal of 421210122611 is 116221012124.

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

It is a cyclic number.

It is not a de Polignac number, because 421210122611 - 2³⁴ = 404030253427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421210122511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1341433355 + ... + 1341433668.

It is an arithmetic number, because the mean of its divisors is an integer number (105973247448).

Almost surely, 2^421210122611 is an apocalyptic number.

421210122611 is a deficient number, since it is larger than the sum of its proper divisors (2682867181).

421210122611 is a wasteful number, since it uses less digits than its factorization.

421210122611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682867180.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 421210122611 its reverse (116221012124), we get a palindrome (537431134735).

The spelling of 421210122611 in words is "four hundred twenty-one billion, two hundred ten million, one hundred twenty-two thousand, six hundred eleven".