1012222121012 has 6 divisors (see below), whose sum is σ = 1771388711778. Its totient is φ = 506111060504.

The previous prime is 1012222121011. The next prime is 1012222121041. The reversal of 1012222121012 is 2101212222101.

It can be written as a sum of positive squares in only one way, i.e., 991749089956 + 20473031056 = 995866^2 + 143084^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012222121011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126527765123 + ... + 126527765130.

It is an arithmetic number, because the mean of its divisors is an integer number (295231451963).

Almost surely, 2^{1012222121012} is an apocalyptic number.

It is an amenable number.

1012222121012 is a deficient number, since it is larger than the sum of its proper divisors (759166590766).

1012222121012 is a wasteful number, since it uses less digits than its factorization.

1012222121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253055530257 (or 253055530255 counting only the distinct ones).

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

Adding to 1012222121012 its reverse (2101212222101), we get a palindrome (3113434343113).

The spelling of 1012222121012 in words is "one trillion, twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, twelve".