1212202220222 has 16 divisors (see below), whose sum is σ = 2078170087392. Its totient is φ = 519487952640.

The previous prime is 1212202220219. The next prime is 1212202220227. The reversal of 1212202220222 is 2220222022121.

It is a super-2 number, since 2×1212202220222² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1212202220194 and 1212202220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212202220227) 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, 1996463 + ... + 2531850.

It is an arithmetic number, because the mean of its divisors is an integer number (129885630462).

Almost surely, 2^{1212202220222} is an apocalyptic number.

1212202220222 is a deficient number, since it is larger than the sum of its proper divisors (865967867170).

1212202220222 is a wasteful number, since it uses less digits than its factorization.

1212202220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4547443.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 1212202220222 its reverse (2220222022121), we get a palindrome (3432424242343).

The spelling of 1212202220222 in words is "one trillion, two hundred twelve billion, two hundred two million, two hundred twenty thousand, two hundred twenty-two".