1011200221222 has 4 divisors (see below), whose sum is σ = 1516800331836. Its totient is φ = 505600110610.

The previous prime is 1011200221183. The next prime is 1011200221249. The reversal of 1011200221222 is 2221220021101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1011200221196 and 1011200221205.

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 as a sum of consecutive naturals, namely, 252800055304 + ... + 252800055307.

It is an arithmetic number, because the mean of its divisors is an integer number (379200082959).

Almost surely, 2^{1011200221222} is an apocalyptic number.

1011200221222 is a deficient number, since it is larger than the sum of its proper divisors (505600110614).

1011200221222 is an equidigital number, since it uses as much as digits as its factorization.

1011200221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505600110613.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1011200221222 its reverse (2221220021101), we get a palindrome (3232420242323).

The spelling of 1011200221222 in words is "one trillion, eleven billion, two hundred million, two hundred twenty-one thousand, two hundred twenty-two".