202120100220001 has 8 divisors (see below), whose sum is σ = 212758205024000. Its totient is φ = 191482015895280.

The previous prime is 202120100219971. The next prime is 202120100220013. The reversal of 202120100220001 is 100022001021202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 202120100220001 - 2¹⁵ = 202120100187233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202120100220601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17760496 + ... + 26826766.

It is an arithmetic number, because the mean of its divisors is an integer number (26594775628000).

Almost surely, 2^{202120100220001} is an apocalyptic number.

It is an amenable number.

202120100220001 is a deficient number, since it is larger than the sum of its proper divisors (10638104803999).

202120100220001 is a wasteful number, since it uses less digits than its factorization.

202120100220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10239639.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202120100220001 its reverse (100022001021202), we get a palindrome (302142101241203).

The spelling of 202120100220001 in words is "two hundred two trillion, one hundred twenty billion, one hundred million, two hundred twenty thousand, one".