1011121220222 has 4 divisors (see below), whose sum is σ = 1516681830336. Its totient is φ = 505560610110.

The previous prime is 1011121220177. The next prime is 1011121220227. The reversal of 1011121220222 is 2220221211101.

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

It is a super-2 number, since 2×1011121220222² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1011121220222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011121220227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252780305054 + ... + 252780305057.

It is an arithmetic number, because the mean of its divisors is an integer number (379170457584).

Almost surely, 2^{1011121220222} is an apocalyptic number.

1011121220222 is a deficient number, since it is larger than the sum of its proper divisors (505560610114).

1011121220222 is an equidigital number, since it uses as much as digits as its factorization.

1011121220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505560610113.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1011121220222 its reverse (2220221211101), we get a palindrome (3231342431323).

The spelling of 1011121220222 in words is "one trillion, eleven billion, one hundred twenty-one million, two hundred twenty thousand, two hundred twenty-two".