1012221210212 has 6 divisors (see below), whose sum is σ = 1771387117878. Its totient is φ = 506110605104.

The previous prime is 1012221210211. The next prime is 1012221210229. The reversal of 1012221210212 is 2120121222101.

It can be written as a sum of positive squares in only one way, i.e., 920475223396 + 91745986816 = 959414^2 + 302896^2 .

It is a super-3 number, since 3×1012221210212³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1012221210211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126527651273 + ... + 126527651280.

It is an arithmetic number, because the mean of its divisors is an integer number (295231186313).

Almost surely, 2^{1012221210212} is an apocalyptic number.

It is an amenable number.

1012221210212 is a deficient number, since it is larger than the sum of its proper divisors (759165907666).

1012221210212 is a wasteful number, since it uses less digits than its factorization.

1012221210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253055302557 (or 253055302555 counting only the distinct ones).

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

Adding to 1012221210212 its reverse (2120121222101), we get a palindrome (3132342432313).

The spelling of 1012221210212 in words is "one trillion, twelve billion, two hundred twenty-one million, two hundred ten thousand, two hundred twelve".