202020001092 has 144 divisors (see below), whose sum is σ = 665477834112. Its totient is φ = 50145868800.

The previous prime is 202020001013. The next prime is 202020001093. The reversal of 202020001092 is 290100020202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (202020001093) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1758034 + ... + 1869417.

It is an arithmetic number, because the mean of its divisors is an integer number (4621373848).

Almost surely, 2^202020001092 is an apocalyptic number.

It is an amenable number.

202020001092 is an abundant number, since it is smaller than the sum of its proper divisors (463457833020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202020001092 is a wasteful number, since it uses less digits than its factorization.

202020001092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3627498 (or 3627493 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 202020001092 its reverse (290100020202), we get a palindrome (492120021294).

The spelling of 202020001092 in words is "two hundred two billion, twenty million, one thousand, ninety-two".