221020201111010 has 16 divisors (see below), whose sum is σ = 454670127999936. Its totient is φ = 75778354666608.

The previous prime is 221020201111007. The next prime is 221020201111019. The reversal of 221020201111010 is 10111102020122.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (221020201111019) 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, 1578715722152 + ... + 1578715722291.

It is an arithmetic number, because the mean of its divisors is an integer number (28416882999996).

Almost surely, 2^{221020201111010} is an apocalyptic number.

221020201111010 is an abundant number, since it is smaller than the sum of its proper divisors (233649926888926).

221020201111010 is a wasteful number, since it uses less digits than its factorization.

221020201111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157431444457.

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

Adding to 221020201111010 its reverse (10111102020122), we get a palindrome (231131303131132).

The spelling of 221020201111010 in words is "two hundred twenty-one trillion, twenty billion, two hundred one million, one hundred eleven thousand, ten".