100212345220421 has 8 divisors (see below), whose sum is σ = 118477649521920. Its totient is φ = 82934354665008.

The previous prime is 100212345220409. The next prime is 100212345220543. The reversal of 100212345220421 is 124022543212001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100212345220421 - 2¹⁸ = 100212344958277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212345220321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246828436301 + ... + 246828436706.

It is an arithmetic number, because the mean of its divisors is an integer number (14809706190240).

Almost surely, 2^{100212345220421} is an apocalyptic number.

It is an amenable number.

100212345220421 is a deficient number, since it is larger than the sum of its proper divisors (18265304301499).

100212345220421 is an equidigital number, since it uses as much as digits as its factorization.

100212345220421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493656873043.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 100212345220421 its reverse (124022543212001), we get a palindrome (224234888432422).

The spelling of 100212345220421 in words is "one hundred trillion, two hundred twelve billion, three hundred forty-five million, two hundred twenty thousand, four hundred twenty-one".