221011010102020 has 96 divisors (see below), whose sum is σ = 491808581953920. Its totient is φ = 83139126405120.

The previous prime is 221011010102009. The next prime is 221011010102039. The reversal of 221011010102020 is 20201010110122.

It is a super-3 number, since 3×221011010102020³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4902943722 + ... + 4902988798.

It is an arithmetic number, because the mean of its divisors is an integer number (5123006062020).

Almost surely, 2^{221011010102020} is an apocalyptic number.

221011010102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221011010102020 is an abundant number, since it is smaller than the sum of its proper divisors (270797571851900).

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

221011010102020 is a wasteful number, since it uses less digits than its factorization.

221011010102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56053 (or 56051 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221011010102020 its reverse (20201010110122), we get a palindrome (241212020212142).

The spelling of 221011010102020 in words is "two hundred twenty-one trillion, eleven billion, ten million, one hundred two thousand, twenty".