10001022021018 has 48 divisors (see below), whose sum is σ = 24776750596416. Its totient is φ = 2856013888320.

The previous prime is 10001022020959. The next prime is 10001022021031. The reversal of 10001022021018 is 81012022010001.

10001022021018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×10001022021018² (a number of 27 digits) contains 22 as substring.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19481371 + ... + 19988142.

It is an arithmetic number, because the mean of its divisors is an integer number (516182304092).

Almost surely, 2^{10001022021018} is an apocalyptic number.

10001022021018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10001022021018 is an abundant number, since it is smaller than the sum of its proper divisors (14775728575398).

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

10001022021018 is a wasteful number, since it uses less digits than its factorization.

10001022021018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39471539 (or 39471536 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10001022021018 its reverse (81012022010001), we get a palindrome (91013044031019).

The spelling of 10001022021018 in words is "ten trillion, one billion, twenty-two million, twenty-one thousand, eighteen".