100002221012 has 6 divisors (see below), whose sum is σ = 175003886778. Its totient is φ = 50001110504.

The previous prime is 100002221009. The next prime is 100002221063. The reversal of 100002221012 is 210122200001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 75727334596 + 24274886416 = 275186^2 + 155804^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100002220984 and 100002221002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12500277623 + ... + 12500277630.

It is an arithmetic number, because the mean of its divisors is an integer number (29167314463).

Almost surely, 2^100002221012 is an apocalyptic number.

It is an amenable number.

100002221012 is a deficient number, since it is larger than the sum of its proper divisors (75001665766).

100002221012 is a wasteful number, since it uses less digits than its factorization.

100002221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25000555257 (or 25000555255 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100002221012 its reverse (210122200001), we get a palindrome (310124421013).

The spelling of 100002221012 in words is "one hundred billion, two million, two hundred twenty-one thousand, twelve".