420322121211 has 4 divisors (see below), whose sum is σ = 560429494952. Its totient is φ = 280214747472.

The previous prime is 420322121129. The next prime is 420322121213. The reversal of 420322121211 is 112121223024.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-420322121211 is a prime.

It is a super-2 number, since 2×420322121211² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420322121213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70053686866 + ... + 70053686871.

It is an arithmetic number, because the mean of its divisors is an integer number (140107373738).

Almost surely, 2^420322121211 is an apocalyptic number.

420322121211 is a deficient number, since it is larger than the sum of its proper divisors (140107373741).

420322121211 is a wasteful number, since it uses less digits than its factorization.

420322121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140107373740.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 420322121211 its reverse (112121223024), we get a palindrome (532443344235).

The spelling of 420322121211 in words is "four hundred twenty billion, three hundred twenty-two million, one hundred twenty-one thousand, two hundred eleven".