421212511131 has 4 divisors (see below), whose sum is σ = 561616681512. Its totient is φ = 280808340752.

The previous prime is 421212511103. The next prime is 421212511169. The reversal of 421212511131 is 131115212124.

It is a happy number.

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 421212511131 - 2¹⁵ = 421212478363 is a prime.

It is a super-2 number, since 2×421212511131² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421212511171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70202085186 + ... + 70202085191.

It is an arithmetic number, because the mean of its divisors is an integer number (140404170378).

Almost surely, 2^421212511131 is an apocalyptic number.

421212511131 is a deficient number, since it is larger than the sum of its proper divisors (140404170381).

421212511131 is a wasteful number, since it uses less digits than its factorization.

421212511131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140404170380.

The product of its digits is 480, while the sum is 24.

Adding to 421212511131 its reverse (131115212124), we get a palindrome (552327723255).

The spelling of 421212511131 in words is "four hundred twenty-one billion, two hundred twelve million, five hundred eleven thousand, one hundred thirty-one".