221012202011 has 8 divisors (see below), whose sum is σ = 221134251504. Its totient is φ = 220890193920.

The previous prime is 221012202007. The next prime is 221012202023. The reversal of 221012202011 is 110202210122.

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 221012202011 - 2² = 221012202007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221012262011) 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, 18167771 + ... + 18179931.

It is an arithmetic number, because the mean of its divisors is an integer number (27641781438).

Almost surely, 2^221012202011 is an apocalyptic number.

221012202011 is a deficient number, since it is larger than the sum of its proper divisors (122049493).

221012202011 is a wasteful number, since it uses less digits than its factorization.

221012202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20701.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221012202011 its reverse (110202210122), we get a palindrome (331214412133).

The spelling of 221012202011 in words is "two hundred twenty-one billion, twelve million, two hundred two thousand, eleven".