1212203230042 has 32 divisors (see below), whose sum is σ = 2129938748928. Its totient is φ = 506626465536.

The previous prime is 1212203230037. The next prime is 1212203230067. The reversal of 1212203230042 is 2400323022121.

It is a junction number, because it is equal to n+sod(n) for n = 1212203229995 and 1212203230022.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3143103 + ... + 3507634.

It is an arithmetic number, because the mean of its divisors is an integer number (66560585904).

Almost surely, 2^{1212203230042} is an apocalyptic number.

1212203230042 is a deficient number, since it is larger than the sum of its proper divisors (917735518886).

1212203230042 is a wasteful number, since it uses less digits than its factorization.

1212203230042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6651070.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1212203230042 its reverse (2400323022121), we get a palindrome (3612526252163).

The spelling of 1212203230042 in words is "one trillion, two hundred twelve billion, two hundred three million, two hundred thirty thousand, forty-two".