100211201219978 has 4 divisors (see below), whose sum is σ = 150316801829970. Its totient is φ = 50105600609988.

The previous prime is 100211201219917. The next prime is 100211201220029. The reversal of 100211201219978 is 879912102112001.

100211201219978 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 81231699456769 + 18979501763209 = 9012863^2 + 4356547^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25052800304993 + ... + 25052800304996.

Almost surely, 2^{100211201219978} is an apocalyptic number.

100211201219978 is a deficient number, since it is larger than the sum of its proper divisors (50105600609992).

100211201219978 is an equidigital number, since it uses as much as digits as its factorization.

100211201219978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50105600609991.

The product of its (nonzero) digits is 36288, while the sum is 44.

The spelling of 100211201219978 in words is "one hundred trillion, two hundred eleven billion, two hundred one million, two hundred nineteen thousand, nine hundred seventy-eight".