1222021211022 has 12 divisors (see below), whose sum is σ = 2647712623920. Its totient is φ = 407340403668.

The previous prime is 1222021210987. The next prime is 1222021211041. The reversal of 1222021211022 is 2201121202221.

It is a happy number.

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: 67890067279 = 1222021211022 / (1 + 2 + 2 + 2 + 0 + 2 + 1 + 2 + 1 + 1 + 0 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 1222021210986 and 1222021211004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33945033622 + ... + 33945033657.

It is an arithmetic number, because the mean of its divisors is an integer number (220642718660).

Almost surely, 2^{1222021211022} is an apocalyptic number.

1222021211022 is an abundant number, since it is smaller than the sum of its proper divisors (1425691412898).

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

1222021211022 is a wasteful number, since it uses less digits than its factorization.

1222021211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67890067287 (or 67890067284 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1222021211022 its reverse (2201121202221), we get a palindrome (3423142413243).

The spelling of 1222021211022 in words is "one trillion, two hundred twenty-two billion, twenty-one million, two hundred eleven thousand, twenty-two".