1212331426 has 8 divisors (see below), whose sum is σ = 1897562304. Its totient is φ = 579810660.

The previous prime is 1212331361. The next prime is 1212331427. The reversal of 1212331426 is 6241332121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1212331426.

It is not an unprimeable number, because it can be changed into a prime (1212331427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13177470 + ... + 13177561.

It is an arithmetic number, because the mean of its divisors is an integer number (237195288).

Almost surely, 2^1212331426 is an apocalyptic number.

1212331426 is a deficient number, since it is larger than the sum of its proper divisors (685230878).

1212331426 is a wasteful number, since it uses less digits than its factorization.

1212331426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26355056.

The product of its digits is 1728, while the sum is 25.

The square root of 1212331426 is about 34818.5500272484. The cubic root of 1212331426 is about 1066.2861978790.

Adding to 1212331426 its reverse (6241332121), we get a palindrome (7453663547).

The spelling of 1212331426 in words is "one billion, two hundred twelve million, three hundred thirty-one thousand, four hundred twenty-six".