1010221220122 has 4 divisors (see below), whose sum is σ = 1515331830186. Its totient is φ = 505110610060.

The previous prime is 1010221220117. The next prime is 1010221220147. The reversal of 1010221220122 is 2210221220101.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 735719623081 + 274501597041 = 857741^2 + 523929^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1010221220096 and 1010221220105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252555305029 + ... + 252555305032.

Almost surely, 2^{1010221220122} is an apocalyptic number.

1010221220122 is a deficient number, since it is larger than the sum of its proper divisors (505110610064).

1010221220122 is an equidigital number, since it uses as much as digits as its factorization.

1010221220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505110610063.

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

Adding to 1010221220122 its reverse (2210221220101), we get a palindrome (3220442440223).

The spelling of 1010221220122 in words is "one trillion, ten billion, two hundred twenty-one million, two hundred twenty thousand, one hundred twenty-two".