1012221100122 has 64 divisors (see below), whose sum is σ = 2058089472000. Its totient is φ = 331835212800.

The previous prime is 1012221100109. The next prime is 1012221100223. The reversal of 1012221100122 is 2210011222101.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137694747 + ... + 137702097.

It is an arithmetic number, because the mean of its divisors is an integer number (32157648000).

Almost surely, 2^{1012221100122} is an apocalyptic number.

1012221100122 is an abundant number, since it is smaller than the sum of its proper divisors (1045868371878).

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

1012221100122 is a wasteful number, since it uses less digits than its factorization.

1012221100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8531.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1012221100122 its reverse (2210011222101), we get a palindrome (3222232322223).

The spelling of 1012221100122 in words is "one trillion, twelve billion, two hundred twenty-one million, one hundred thousand, one hundred twenty-two".