100012222021122 has 48 divisors (see below), whose sum is σ = 219145960818720. Its totient is φ = 32960113217856.

The previous prime is 100012222021097. The next prime is 100012222021123. The reversal of 100012222021122 is 221120222210001.

It is a happy number.

It is a super-2 number, since 2×100012222021122² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 100012222021095 and 100012222021104.

It is not an unprimeable number, because it can be changed into a prime (100012222021123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16918753 + ... + 22051499.

It is an arithmetic number, because the mean of its divisors is an integer number (4565540850390).

Almost surely, 2^{100012222021122} is an apocalyptic number.

100012222021122 is an abundant number, since it is smaller than the sum of its proper divisors (119133738797598).

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

100012222021122 is a wasteful number, since it uses less digits than its factorization.

100012222021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5145007 (or 5145004 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 100012222021122 its reverse (221120222210001), we get a palindrome (321132444231123).

The spelling of 100012222021122 in words is "one hundred trillion, twelve billion, two hundred twenty-two million, twenty-one thousand, one hundred twenty-two".