1012102112220 has 48 divisors (see below), whose sum is σ = 2834505031680. Its totient is φ = 269834933056.

The previous prime is 1012102112207. The next prime is 1012102112243. The reversal of 1012102112220 is 222112012101.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1012102112220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1565340 + ... + 2115299.

It is an arithmetic number, because the mean of its divisors is an integer number (59052188160).

Almost surely, 2^{1012102112220} is an apocalyptic number.

1012102112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012102112220 is an abundant number, since it is smaller than the sum of its proper divisors (1822402919460).

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

1012102112220 is a wasteful number, since it uses less digits than its factorization.

1012102112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3685234 (or 3685232 counting only the distinct ones).

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

Adding to 1012102112220 its reverse (222112012101), we get a palindrome (1234214124321).

The spelling of 1012102112220 in words is "one trillion, twelve billion, one hundred two million, one hundred twelve thousand, two hundred twenty".