1001201022078 has 8 divisors (see below), whose sum is σ = 2002402044168. Its totient is φ = 333733674024.

The previous prime is 1001201022077. The next prime is 1001201022139. The reversal of 1001201022078 is 8702201021001.

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

1001201022078 is an admirable number.

It is a super-2 number, since 2×1001201022078² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001201022077) 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, 83433418501 + ... + 83433418512.

It is an arithmetic number, because the mean of its divisors is an integer number (250300255521).

Almost surely, 2^{1001201022078} is an apocalyptic number.

1001201022078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1001201022078 is a wasteful number, since it uses less digits than its factorization.

1001201022078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166866837018.

The product of its (nonzero) digits is 448, while the sum is 24.

Adding to 1001201022078 its reverse (8702201021001), we get a palindrome (9703402043079).

The spelling of 1001201022078 in words is "one trillion, one billion, two hundred one million, twenty-two thousand, seventy-eight".