162005216021 has 16 divisors (see below), whose sum is σ = 180934776000. Its totient is φ = 143809468800.

The previous prime is 162005216003. The next prime is 162005216027. The reversal of 162005216021 is 120612500261.

It is a cyclic number.

It is not a de Polignac number, because 162005216021 - 2²² = 162001021717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162005216027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 740960 + ... + 934361.

It is an arithmetic number, because the mean of its divisors is an integer number (11308423500).

Almost surely, 2^162005216021 is an apocalyptic number.

162005216021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

162005216021 is a deficient number, since it is larger than the sum of its proper divisors (18929559979).

162005216021 is a wasteful number, since it uses less digits than its factorization.

162005216021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675540.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 162005216021 its reverse (120612500261), we get a palindrome (282617716282).

The spelling of 162005216021 in words is "one hundred sixty-two billion, five million, two hundred sixteen thousand, twenty-one".