100012001212021 has 4 divisors (see below), whose sum is σ = 100392274981152. Its totient is φ = 99631727442892.

The previous prime is 100012001212003. The next prime is 100012001212031. The reversal of 100012001212021 is 120212100210001.

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 100012001212021 - 2¹⁷ = 100012001080949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100012001211992 and 100012001212010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100012001212001) 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, 190136884171 + ... + 190136884696.

It is an arithmetic number, because the mean of its divisors is an integer number (25098068745288).

Almost surely, 2^{100012001212021} is an apocalyptic number.

It is an amenable number.

100012001212021 is a deficient number, since it is larger than the sum of its proper divisors (380273769131).

100012001212021 is an equidigital number, since it uses as much as digits as its factorization.

100012001212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380273769130.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100012001212021 its reverse (120212100210001), we get a palindrome (220224101422022).

The spelling of 100012001212021 in words is "one hundred trillion, twelve billion, one million, two hundred twelve thousand, twenty-one".