221010102111020 has 24 divisors (see below), whose sum is σ = 464125103668800. Its totient is φ = 88403300037632.

The previous prime is 221010102111017. The next prime is 221010102111047. The reversal of 221010102111020 is 20111201010122.

It is a junction number, because it is equal to n+sod(n) for n = 221010102110986 and 221010102111004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43850900 + ... + 48630459.

It is an arithmetic number, because the mean of its divisors is an integer number (19338545986200).

Almost surely, 2^{221010102111020} is an apocalyptic number.

221010102111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221010102111020 is an abundant number, since it is smaller than the sum of its proper divisors (243115001557780).

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

221010102111020 is a wasteful number, since it uses less digits than its factorization.

221010102111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92600857 (or 92600855 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221010102111020 its reverse (20111201010122), we get a palindrome (241121303121142).

It can be divided in two parts, 221010102 and 111020, that added together give a palindrome (221121122).

The spelling of 221010102111020 in words is "two hundred twenty-one trillion, ten billion, one hundred two million, one hundred eleven thousand, twenty".