100001222012 has 12 divisors (see below), whose sum is σ = 175037222976. Its totient is φ = 49990586880.

The previous prime is 100001221997. The next prime is 100001222021. The reversal of 100001222012 is 210222100001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100001221984 and 100001222002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2483564 + ... + 2523507.

It is an arithmetic number, because the mean of its divisors is an integer number (14586435248).

Almost surely, 2^100001222012 is an apocalyptic number.

It is an amenable number.

100001222012 is a deficient number, since it is larger than the sum of its proper divisors (75036000964).

100001222012 is a wasteful number, since it uses less digits than its factorization.

100001222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5012068 (or 5012066 counting only the distinct ones).

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

Adding to 100001222012 its reverse (210222100001), we get a palindrome (310223322013).

The spelling of 100001222012 in words is "one hundred billion, one million, two hundred twenty-two thousand, twelve".