221020212010202 has 16 divisors (see below), whose sum is σ = 361677019655232. Its totient is φ = 100461626670720.

The previous prime is 221020212010159. The next prime is 221020212010249. The reversal of 221020212010202 is 202010212020122.

It is a happy number.

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, 104229518 + ... + 106328889.

It is an arithmetic number, because the mean of its divisors is an integer number (22604813728452).

Almost surely, 2^{221020212010202} is an apocalyptic number.

221020212010202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221020212010202 is a deficient number, since it is larger than the sum of its proper divisors (140656807645030).

221020212010202 is a wasteful number, since it uses less digits than its factorization.

221020212010202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210606133.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221020212010202 its reverse (202010212020122), we get a palindrome (423030424030324).

The spelling of 221020212010202 in words is "two hundred twenty-one trillion, twenty billion, two hundred twelve million, ten thousand, two hundred two".