100212122021111 has 4 divisors (see below), whose sum is σ = 100214176396824. Its totient is φ = 100210067645400.

The previous prime is 100212122021017. The next prime is 100212122021113. The reversal of 100212122021111 is 111120221212001.

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

It is a cyclic number.

It is not a de Polignac number, because 100212122021111 - 2³⁸ = 99937244114167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100212122021111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212122021113) 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, 1027114685 + ... + 1027212246.

It is an arithmetic number, because the mean of its divisors is an integer number (25053544099206).

Almost surely, 2^{100212122021111} is an apocalyptic number.

100212122021111 is a deficient number, since it is larger than the sum of its proper divisors (2054375713).

100212122021111 is an equidigital number, since it uses as much as digits as its factorization.

100212122021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054375712.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 100212122021111 its reverse (111120221212001), we get a palindrome (211332343233112).

The spelling of 100212122021111 in words is "one hundred trillion, two hundred twelve billion, one hundred twenty-two million, twenty-one thousand, one hundred eleven".