1020112221222 has 12 divisors (see below), whose sum is σ = 2210243146020. Its totient is φ = 340037407068.

The previous prime is 1020112221221. The next prime is 1020112221229. The reversal of 1020112221222 is 2221222110201.

It is a happy number.

1020112221222 is a `hidden beast` number, since 10 + 201 + 12 + 221 + 222 = 666.

1020112221222 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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: 56672901179 = 1020112221222 / (1 + 0 + 2 + 0 + 1 + 1 + 2 + 2 + 2 + 1 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 1020112221195 and 1020112221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020112221221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28336450572 + ... + 28336450607.

It is an arithmetic number, because the mean of its divisors is an integer number (184186928835).

Almost surely, 2^{1020112221222} is an apocalyptic number.

1020112221222 is an abundant number, since it is smaller than the sum of its proper divisors (1190130924798).

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

1020112221222 is a wasteful number, since it uses less digits than its factorization.

1020112221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56672901187 (or 56672901184 counting only the distinct ones).

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

Adding to 1020112221222 its reverse (2221222110201), we get a palindrome (3241334331423).

The spelling of 1020112221222 in words is "one trillion, twenty billion, one hundred twelve million, two hundred twenty-one thousand, two hundred twenty-two".