221010200111020 has 24 divisors (see below), whose sum is σ = 468379414918800. Its totient is φ = 87593033437632.

The previous prime is 221010200110949. The next prime is 221010200111021. The reversal of 221010200111020 is 20111002010122.

It is a super-2 number, since 2×221010200111020² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221010200111021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50690410690 + ... + 50690415049.

It is an arithmetic number, because the mean of its divisors is an integer number (19515808954950).

Almost surely, 2^{221010200111020} is an apocalyptic number.

221010200111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221010200111020 is an abundant number, since it is smaller than the sum of its proper divisors (247369214807780).

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

221010200111020 is a wasteful number, since it uses less digits than its factorization.

221010200111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101380825857 (or 101380825855 counting only the distinct ones).

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

Adding to 221010200111020 its reverse (20111002010122), we get a palindrome (241121202121142).

The spelling of 221010200111020 in words is "two hundred twenty-one trillion, ten billion, two hundred million, one hundred eleven thousand, twenty".