1212013427 has 2 divisors, whose sum is σ = 1212013428. Its totient is φ = 1212013426.

The previous prime is 1212013399. The next prime is 1212013483. The reversal of 1212013427 is 7243102121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212013427 - 2¹⁴ = 1211997043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212013927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606006713 + 606006714.

It is an arithmetic number, because the mean of its divisors is an integer number (606006714).

Almost surely, 2^1212013427 is an apocalyptic number.

1212013427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212013427 is an equidigital number, since it uses as much as digits as its factorization.

1212013427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1212013427 is about 34813.9832107732. The cubic root of 1212013427 is about 1066.1929594600.

Adding to 1212013427 its reverse (7243102121), we get a palindrome (8455115548).

The spelling of 1212013427 in words is "one billion, two hundred twelve million, thirteen thousand, four hundred twenty-seven".