100212310112221 has 4 divisors (see below), whose sum is σ = 100213576473600. Its totient is φ = 100211043750844.

The previous prime is 100212310112203. The next prime is 100212310112231. The reversal of 100212310112221 is 122211013212001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100212310112221 - 2³¹ = 100210162628573 is a prime.

It is a super-2 number, since 2×100212310112221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212310112231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633061981 + ... + 633220258.

It is an arithmetic number, because the mean of its divisors is an integer number (25053394118400).

Almost surely, 2^{100212310112221} is an apocalyptic number.

It is an amenable number.

100212310112221 is a deficient number, since it is larger than the sum of its proper divisors (1266361379).

100212310112221 is an equidigital number, since it uses as much as digits as its factorization.

100212310112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266361378.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 100212310112221 its reverse (122211013212001), we get a palindrome (222423323324222).

The spelling of 100212310112221 in words is "one hundred trillion, two hundred twelve billion, three hundred ten million, one hundred twelve thousand, two hundred twenty-one".