1212641422 has 4 divisors (see below), whose sum is σ = 1818962136. Its totient is φ = 606320710.

The previous prime is 1212641411. The next prime is 1212641449. The reversal of 1212641422 is 2241462121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2241462121 = 17 ⋅131850713.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303160354 + ... + 303160357.

It is an arithmetic number, because the mean of its divisors is an integer number (454740534).

Almost surely, 2^1212641422 is an apocalyptic number.

1212641422 is a deficient number, since it is larger than the sum of its proper divisors (606320714).

1212641422 is an equidigital number, since it uses as much as digits as its factorization.

1212641422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606320713.

The product of its digits is 1536, while the sum is 25.

The square root of 1212641422 is about 34823.0013353243. The cubic root of 1212641422 is about 1066.3770740974.

It can be divided in two parts, 121264142 and 2, that added together give a square (121264144 = 11012²).

The spelling of 1212641422 in words is "one billion, two hundred twelve million, six hundred forty-one thousand, four hundred twenty-two".