1021122200222 has 4 divisors (see below), whose sum is σ = 1531683300336. Its totient is φ = 510561100110.

The previous prime is 1021122200183. The next prime is 1021122200239. The reversal of 1021122200222 is 2220022211201.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1021122200222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255280550054 + ... + 255280550057.

It is an arithmetic number, because the mean of its divisors is an integer number (382920825084).

Almost surely, 2^{1021122200222} is an apocalyptic number.

1021122200222 is a deficient number, since it is larger than the sum of its proper divisors (510561100114).

1021122200222 is an equidigital number, since it uses as much as digits as its factorization.

1021122200222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510561100113.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1021122200222 its reverse (2220022211201), we get a palindrome (3241144411423).

The spelling of 1021122200222 in words is "one trillion, twenty-one billion, one hundred twenty-two million, two hundred thousand, two hundred twenty-two".