221101012010 has 32 divisors (see below), whose sum is σ = 420839967744. Its totient is φ = 83499984000.

The previous prime is 221101012009. The next prime is 221101012019. The reversal of 221101012010 is 10210101122.

It is a junction number, because it is equal to n+sod(n) for n = 221101011982 and 221101012000.

It is not an unprimeable number, because it can be changed into a prime (221101012019) 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, 8685206 + ... + 8710625.

It is an arithmetic number, because the mean of its divisors is an integer number (13151248992).

Almost surely, 2^221101012010 is an apocalyptic number.

221101012010 is a deficient number, since it is larger than the sum of its proper divisors (199738955734).

221101012010 is a wasteful number, since it uses less digits than its factorization.

221101012010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17395910.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 221101012010 its reverse (10210101122), we get a palindrome (231311113132).

The spelling of 221101012010 in words is "two hundred twenty-one billion, one hundred one million, twelve thousand, ten".