20121212467 has 2 divisors, whose sum is σ = 20121212468. Its totient is φ = 20121212466.

The previous prime is 20121212413. The next prime is 20121212497. The reversal of 20121212467 is 76421212102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20121212467 - 2¹¹ = 20121210419 is a prime.

It is a super-2 number, since 2×20121212467² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20121212407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060606233 + 10060606234.

It is an arithmetic number, because the mean of its divisors is an integer number (10060606234).

Almost surely, 2^20121212467 is an apocalyptic number.

20121212467 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121212467 is an equidigital number, since it uses as much as digits as its factorization.

20121212467 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

Adding to 20121212467 its reverse (76421212102), we get a palindrome (96542424569).

The spelling of 20121212467 in words is "twenty billion, one hundred twenty-one million, two hundred twelve thousand, four hundred sixty-seven".