100201220212021 has 4 divisors (see below), whose sum is σ = 104557795003872. Its totient is φ = 95844645420172.

The previous prime is 100201220212003. The next prime is 100201220212043. The reversal of 100201220212021 is 120212022102001.

It is a happy number.

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 100201220212021 - 2⁹ = 100201220211509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100201220211986 and 100201220212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100201220242021) 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, 2178287395891 + ... + 2178287395936.

It is an arithmetic number, because the mean of its divisors is an integer number (26139448750968).

Almost surely, 2^{100201220212021} is an apocalyptic number.

It is an amenable number.

100201220212021 is a deficient number, since it is larger than the sum of its proper divisors (4356574791851).

100201220212021 is an equidigital number, since it uses as much as digits as its factorization.

100201220212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4356574791850.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 100201220212021 its reverse (120212022102001), we get a palindrome (220413242314022).

The spelling of 100201220212021 in words is "one hundred trillion, two hundred one billion, two hundred twenty million, two hundred twelve thousand, twenty-one".