221220020212111 has 8 divisors (see below), whose sum is σ = 223134079946624. Its totient is φ = 219314192993280.

The previous prime is 221220020212049. The next prime is 221220020212133. The reversal of 221220020212111 is 111212020022122.

221220020212111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221220020212111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221220020212151) 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, 2058074946 + ... + 2058182431.

It is an arithmetic number, because the mean of its divisors is an integer number (27891759993328).

Almost surely, 2^{221220020212111} is an apocalyptic number.

221220020212111 is a deficient number, since it is larger than the sum of its proper divisors (1914059734513).

221220020212111 is a wasteful number, since it uses less digits than its factorization.

221220020212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4116257841.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221220020212111 its reverse (111212020022122), we get a palindrome (332432040234233).

The spelling of 221220020212111 in words is "two hundred twenty-one trillion, two hundred twenty billion, twenty million, two hundred twelve thousand, one hundred eleven".