1012112220100 has 36 divisors (see below), whose sum is σ = 2201929575300. Its totient is φ = 403804140160.

The previous prime is 1012112220089. The next prime is 1012112220109. The reversal of 1012112220100 is 10222112101.

It can be written as a sum of positive squares in 6 ways, for example, as 3063843904 + 1009048376196 = 55352^2 + 1004514^2 .

It is a super-2 number, since 2×1012112220100² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1012112220109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12970255 + ... + 13048054.

It is an arithmetic number, because the mean of its divisors is an integer number (61164710425).

Almost surely, 2^{1012112220100} is an apocalyptic number.

1012112220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012112220100 is an abundant number, since it is smaller than the sum of its proper divisors (1189817355200).

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

1012112220100 is a wasteful number, since it uses less digits than its factorization.

1012112220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26018712 (or 26018705 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1012112220100 its reverse (10222112101), we get a palindrome (1022334332201).

The spelling of 1012112220100 in words is "one trillion, twelve billion, one hundred twelve million, two hundred twenty thousand, one hundred".