1021023111222 has 16 divisors (see below), whose sum is σ = 2268940247280. Its totient is φ = 340341037056.

The previous prime is 1021023111211. The next prime is 1021023111247. The reversal of 1021023111222 is 2221113201201.

1021023111222 is a `hidden beast` number, since 1 + 0 + 210 + 231 + 1 + 1 + 222 = 666.

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 = 1021023111195 and 1021023111204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9453917643 + ... + 9453917750.

It is an arithmetic number, because the mean of its divisors is an integer number (141808765455).

Almost surely, 2^{1021023111222} is an apocalyptic number.

1021023111222 is an abundant number, since it is smaller than the sum of its proper divisors (1247917136058).

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

1021023111222 is a wasteful number, since it uses less digits than its factorization.

1021023111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18907835404 (or 18907835398 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1021023111222 its reverse (2221113201201), we get a palindrome (3242136312423).

The spelling of 1021023111222 in words is "one trillion, twenty-one billion, twenty-three million, one hundred eleven thousand, two hundred twenty-two".