12222121031 has 2 divisors, whose sum is σ = 12222121032. Its totient is φ = 12222121030.

The previous prime is 12222121001. The next prime is 12222121069. The reversal of 12222121031 is 13012122221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12222121031 - 2²² = 12217926727 is a prime.

It is a super-2 number, since 2×12222121031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12222121001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111060515 + 6111060516.

It is an arithmetic number, because the mean of its divisors is an integer number (6111060516).

Almost surely, 2^12222121031 is an apocalyptic number.

12222121031 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222121031 is an equidigital number, since it uses as much as digits as its factorization.

12222121031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12222121031 its reverse (13012122221), we get a palindrome (25234243252).

The spelling of 12222121031 in words is "twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, thirty-one".