202122011018 has 8 divisors (see below), whose sum is σ = 303189170148. Its totient is φ = 101058954304.

The previous prime is 202122011017. The next prime is 202122011041. The reversal of 202122011018 is 810110221202.

It can be written as a sum of positive squares in 2 ways, for example, as 184820028649 + 17301982369 = 429907^2 + 131537^2 .

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

It is not an unprimeable number, because it can be changed into a prime (202122011017) 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, 899321 + ... + 1101372.

Almost surely, 2^202122011018 is an apocalyptic number.

202122011018 is a deficient number, since it is larger than the sum of its proper divisors (101067159130).

202122011018 is a wasteful number, since it uses less digits than its factorization.

202122011018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051208.

The product of its (nonzero) digits is 128, while the sum is 20.

The spelling of 202122011018 in words is "two hundred two billion, one hundred twenty-two million, eleven thousand, eighteen".