1212200222022 has 12 divisors (see below), whose sum is σ = 2626433814420. Its totient is φ = 404066740668.

The previous prime is 1212200221963. The next prime is 1212200222029. The reversal of 1212200222022 is 2202220022121.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 67344456779 = 1212200222022 / (1 + 2 + 1 + 2 + 2 + 0 + 0 + 2 + 2 + 2 + 0 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 1212200221986 and 1212200222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212200222029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33672228372 + ... + 33672228407.

It is an arithmetic number, because the mean of its divisors is an integer number (218869484535).

Almost surely, 2^{1212200222022} is an apocalyptic number.

1212200222022 is an abundant number, since it is smaller than the sum of its proper divisors (1414233592398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212200222022 is a wasteful number, since it uses less digits than its factorization.

1212200222022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67344456787 (or 67344456784 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 1212200222022 its reverse (2202220022121), we get a palindrome (3414420244143).

The spelling of 1212200222022 in words is "one trillion, two hundred twelve billion, two hundred million, two hundred twenty-two thousand, twenty-two".