221202000011 has 4 divisors (see below), whose sum is σ = 221578835352. Its totient is φ = 220825164672.

The previous prime is 221201999989. The next prime is 221202000067. The reversal of 221202000011 is 110000202122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221202000011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221201999956 and 221202000001.

It is not an unprimeable number, because it can be changed into a prime (221202000911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188416790 + ... + 188417963.

It is an arithmetic number, because the mean of its divisors is an integer number (55394708838).

Almost surely, 2^221202000011 is an apocalyptic number.

221202000011 is a deficient number, since it is larger than the sum of its proper divisors (376835341).

221202000011 is an equidigital number, since it uses as much as digits as its factorization.

221202000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376835340.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 221202000011 its reverse (110000202122), we get a palindrome (331202202133).

The spelling of 221202000011 in words is "two hundred twenty-one billion, two hundred two million, eleven", and thus it is an aban number.