100011212120122 has 4 divisors (see below), whose sum is σ = 150016818180186. Its totient is φ = 50005606060060.

The previous prime is 100011212120087. The next prime is 100011212120159. The reversal of 100011212120122 is 221021212110001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 98456978657401 + 1554233462721 = 9922549^2 + 1246689^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100011212120096 and 100011212120105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25002803030029 + ... + 25002803030032.

Almost surely, 2^{100011212120122} is an apocalyptic number.

100011212120122 is a deficient number, since it is larger than the sum of its proper divisors (50005606060064).

100011212120122 is an equidigital number, since it uses as much as digits as its factorization.

100011212120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50005606060063.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100011212120122 its reverse (221021212110001), we get a palindrome (321032424230123).

The spelling of 100011212120122 in words is "one hundred trillion, eleven billion, two hundred twelve million, one hundred twenty thousand, one hundred twenty-two".