12211212202222 has 32 divisors (see below), whose sum is σ = 20321134928640. Its totient is φ = 5457117683520.

The previous prime is 12211212202207. The next prime is 12211212202283. The reversal of 12211212202222 is 22220221211221.

It is a super-2 number, since 2×12211212202222² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12211212202193 and 12211212202202.

It is a congruent number.

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, 19069503 + ... + 19699450.

It is an arithmetic number, because the mean of its divisors is an integer number (635035466520).

Almost surely, 2^{12211212202222} is an apocalyptic number.

12211212202222 is a deficient number, since it is larger than the sum of its proper divisors (8109922726418).

12211212202222 is a wasteful number, since it uses less digits than its factorization.

12211212202222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38769208.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 12211212202222 its reverse (22220221211221), we get a palindrome (34431433413443).

The spelling of 12211212202222 in words is "twelve trillion, two hundred eleven billion, two hundred twelve million, two hundred two thousand, two hundred twenty-two".