1212234013 has 4 divisors (see below), whose sum is σ = 1251338368. Its totient is φ = 1173129660.

The previous prime is 1212233983. The next prime is 1212234031. The reversal of 1212234013 is 3104322121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1212234013 - 2²¹ = 1210136861 is a prime.

It is a super-2 number, since 2×1212234013² = 2939022604548168338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212234043) 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, 19552131 + ... + 19552192.

It is an arithmetic number, because the mean of its divisors is an integer number (312834592).

Almost surely, 2^1212234013 is an apocalyptic number.

It is an amenable number.

1212234013 is a deficient number, since it is larger than the sum of its proper divisors (39104355).

1212234013 is an equidigital number, since it uses as much as digits as its factorization.

1212234013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39104354.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1212234013 is about 34817.1511327392. The cubic root of 1212234013 is about 1066.2576377792.

Adding to 1212234013 its reverse (3104322121), we get a palindrome (4316556134).

It can be divided in two parts, 1212 and 234013, that added together give a square (235225 = 485²).

The spelling of 1212234013 in words is "one billion, two hundred twelve million, two hundred thirty-four thousand, thirteen".