221110101202020 has 192 divisors, whose sum is σ = 622583287603200. Its totient is φ = 58632421155840.

The previous prime is 221110101202019. The next prime is 221110101202021. The reversal of 221110101202020 is 20202101011122.

It is an interprime number because it is at equal distance from previous prime (221110101202019) and next prime (221110101202021).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (221110101202021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 74472919096 + ... + 74472922064.

It is an arithmetic number, because the mean of its divisors is an integer number (3242621289600).

Almost surely, 2^{221110101202020} is an apocalyptic number.

221110101202020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221110101202020 is an abundant number, since it is smaller than the sum of its proper divisors (401473186401180).

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

221110101202020 is a wasteful number, since it uses less digits than its factorization.

221110101202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7938 (or 7936 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221110101202020 its reverse (20202101011122), we get a palindrome (241312202213142).

The spelling of 221110101202020 in words is "two hundred twenty-one trillion, one hundred ten billion, one hundred one million, two hundred two thousand, twenty".