202020001001 has 16 divisors (see below), whose sum is σ = 249755003904. Its totient is φ = 159123213504.

The previous prime is 202020000983. The next prime is 202020001003. The reversal of 202020001001 is 100100020202.

It is a cyclic number.

It is not a de Polignac number, because 202020001001 - 2⁶ = 202020000937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202020001001.

It is not an unprimeable number, because it can be changed into a prime (202020001003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4957286 + ... + 4997871.

It is an arithmetic number, because the mean of its divisors is an integer number (15609687744).

Almost surely, 2^202020001001 is an apocalyptic number.

It is an amenable number.

202020001001 is a deficient number, since it is larger than the sum of its proper divisors (47735002903).

202020001001 is a wasteful number, since it uses less digits than its factorization.

202020001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9955400.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 202020001001 its reverse (100100020202), we get a palindrome (302120021203).

The spelling of 202020001001 in words is "two hundred two billion, twenty million, one thousand, one".