1820021112122 has 8 divisors (see below), whose sum is σ = 2746780329216. Its totient is φ = 904427669052.

The previous prime is 1820021112109. The next prime is 1820021112139. The reversal of 1820021112122 is 2212111200281.

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

It is a super-3 number, since 3×1820021112122³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2791443098 + ... + 2791443749.

It is an arithmetic number, because the mean of its divisors is an integer number (343347541152).

Almost surely, 2^{1820021112122} is an apocalyptic number.

1820021112122 is a deficient number, since it is larger than the sum of its proper divisors (926759217094).

1820021112122 is a wasteful number, since it uses less digits than its factorization.

1820021112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5582887012.

The product of its (nonzero) digits is 256, while the sum is 23.

The spelling of 1820021112122 in words is "one trillion, eight hundred twenty billion, twenty-one million, one hundred twelve thousand, one hundred twenty-two".