1012221012 has 48 divisors (see below), whose sum is σ = 2583000000. Its totient is φ = 305967360.

The previous prime is 1012220983. The next prime is 1012221013. The reversal of 1012221012 is 2101222101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012221013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44614 + ... + 63362.

It is an arithmetic number, because the mean of its divisors is an integer number (53812500).

Almost surely, 2^1012221012 is an apocalyptic number.

1012221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1012221012 is an abundant number, since it is smaller than the sum of its proper divisors (1570778988).

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

1012221012 is a wasteful number, since it uses less digits than its factorization.

1012221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19176 (or 19174 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1012221012 is about 31815.4209778843. The cubic root of 1012221012 is about 1004.0571876337.

Adding to 1012221012 its reverse (2101222101), we get a palindrome (3113443113).

It can be divided in two parts, 101222101 and 2, that multiplied together give a palindrome (202444202).

The spelling of 1012221012 in words is "one billion, twelve million, two hundred twenty-one thousand, twelve".