202012220001 has 4 divisors (see below), whose sum is σ = 269349626672. Its totient is φ = 134674813332.

The previous prime is 202012219991. The next prime is 202012220021. The reversal of 202012220001 is 100022210202.

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 not a de Polignac number, because 202012220001 - 2⁹ = 202012219489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (202012220021) 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, 33668703331 + ... + 33668703336.

It is an arithmetic number, because the mean of its divisors is an integer number (67337406668).

Almost surely, 2^202012220001 is an apocalyptic number.

It is an amenable number.

202012220001 is a deficient number, since it is larger than the sum of its proper divisors (67337406671).

202012220001 is an equidigital number, since it uses as much as digits as its factorization.

202012220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67337406670.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 202012220001 its reverse (100022210202), we get a palindrome (302034430203).

The spelling of 202012220001 in words is "two hundred two billion, twelve million, two hundred twenty thousand, one".