100022111993 has 4 divisors (see below), whose sum is σ = 100022861988. Its totient is φ = 100021362000.

The previous prime is 100022111983. The next prime is 100022112031. The reversal of 100022111993 is 399111220001.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 26162092009 + 73860019984 = 161747^2 + 271772^2 .

It is a cyclic number.

It is not a de Polignac number, because 100022111993 - 2²⁸ = 99753676537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100022111983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114746 + ... + 461747.

It is an arithmetic number, because the mean of its divisors is an integer number (25005715497).

Almost surely, 2^100022111993 is an apocalyptic number.

It is an amenable number.

100022111993 is a deficient number, since it is larger than the sum of its proper divisors (749995).

100022111993 is an equidigital number, since it uses as much as digits as its factorization.

100022111993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749994.

The product of its (nonzero) digits is 972, while the sum is 29.

Adding to 100022111993 its reverse (399111220001), we get a palindrome (499133331994).

The spelling of 100022111993 in words is "one hundred billion, twenty-two million, one hundred eleven thousand, nine hundred ninety-three".