1212422204012 has 24 divisors (see below), whose sum is σ = 2293771742640. Its totient is φ = 558783489600.

The previous prime is 1212422203991. The next prime is 1212422204017. The reversal of 1212422204012 is 2104022242121.

It is a super-2 number, since 2×1212422204012² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1212422204017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215577239 + ... + 215582862.

It is an arithmetic number, because the mean of its divisors is an integer number (95573822610).

Almost surely, 2^{1212422204012} is an apocalyptic number.

It is an amenable number.

1212422204012 is a deficient number, since it is larger than the sum of its proper divisors (1081349538628).

1212422204012 is a wasteful number, since it uses less digits than its factorization.

1212422204012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431160161 (or 431160159 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 1212422204012 its reverse (2104022242121), we get a palindrome (3316444446133).

The spelling of 1212422204012 in words is "one trillion, two hundred twelve billion, four hundred twenty-two million, two hundred four thousand, twelve".