221002111011 has 32 divisors (see below), whose sum is σ = 328986915840. Its totient is φ = 130804480800.

The previous prime is 221002110983. The next prime is 221002111037. The reversal of 221002111011 is 110111200122.

It is not a de Polignac number, because 221002111011 - 2¹⁴ = 221002094627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221002111091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14833876 + ... + 14848766.

It is an arithmetic number, because the mean of its divisors is an integer number (10280841120).

Almost surely, 2^221002111011 is an apocalyptic number.

221002111011 is a deficient number, since it is larger than the sum of its proper divisors (107984804829).

221002111011 is a wasteful number, since it uses less digits than its factorization.

221002111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25407.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 221002111011 its reverse (110111200122), we get a palindrome (331113311133).

The spelling of 221002111011 in words is "two hundred twenty-one billion, two million, one hundred eleven thousand, eleven".