221020202011 has 8 divisors (see below), whose sum is σ = 252616579040. Its totient is φ = 189429340608.

The previous prime is 221020202003. The next prime is 221020202027. The reversal of 221020202011 is 110202020122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221020202011 - 2³ = 221020202003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221020201982 and 221020202000.

It is not an unprimeable number, because it can be changed into a prime (221020202071) 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, 1292676 + ... + 1453633.

It is an arithmetic number, because the mean of its divisors is an integer number (31577072380).

Almost surely, 2^221020202011 is an apocalyptic number.

221020202011 is a deficient number, since it is larger than the sum of its proper divisors (31596377029).

221020202011 is a wasteful number, since it uses less digits than its factorization.

221020202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757813.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221020202011 its reverse (110202020122), we get a palindrome (331222222133).

The spelling of 221020202011 in words is "two hundred twenty-one billion, twenty million, two hundred two thousand, eleven".