1222012111122 has 48 divisors (see below), whose sum is σ = 2958840874080. Its totient is φ = 361274827200.

The previous prime is 1222012111091. The next prime is 1222012111129. The reversal of 1222012111122 is 2211112102221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1222012111095 and 1222012111104.

It is not an unprimeable number, because it can be changed into a prime (1222012111129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75257472 + ... + 75273707.

It is an arithmetic number, because the mean of its divisors is an integer number (61642518210).

Almost surely, 2^{1222012111122} is an apocalyptic number.

1222012111122 is an abundant number, since it is smaller than the sum of its proper divisors (1736828762958).

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

1222012111122 is a wasteful number, since it uses less digits than its factorization.

1222012111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150531239 (or 150531236 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1222012111122 its reverse (2211112102221), we get a palindrome (3433124213343).

The spelling of 1222012111122 in words is "one trillion, two hundred twenty-two billion, twelve million, one hundred eleven thousand, one hundred twenty-two".