1222121220212 has 12 divisors (see below), whose sum is σ = 2140076991360. Its totient is φ = 610670651256.

The previous prime is 1222121220179. The next prime is 1222121220217. The reversal of 1222121220212 is 2120221212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222121220217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97482662 + ... + 97495197.

It is an arithmetic number, because the mean of its divisors is an integer number (178339749280).

Almost surely, 2^{1222121220212} is an apocalyptic number.

It is an amenable number.

1222121220212 is a deficient number, since it is larger than the sum of its proper divisors (917955771148).

1222121220212 is a wasteful number, since it uses less digits than its factorization.

1222121220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194979430 (or 194979428 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1222121220212 its reverse (2120221212221), we get a palindrome (3342342432433).

The spelling of 1222121220212 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred twenty thousand, two hundred twelve".