101221222011 has 64 divisors (see below), whose sum is σ = 170877106176. Its totient is φ = 51862809600.

The previous prime is 101221222007. The next prime is 101221222073. The reversal of 101221222011 is 110222122101.

It is not a de Polignac number, because 101221222011 - 2² = 101221222007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101221222211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6365791 + ... + 6381671.

It is an arithmetic number, because the mean of its divisors is an integer number (2669954784).

Almost surely, 2^101221222011 is an apocalyptic number.

101221222011 is a deficient number, since it is larger than the sum of its proper divisors (69655884165).

101221222011 is a wasteful number, since it uses less digits than its factorization.

101221222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16572.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101221222011 its reverse (110222122101), we get a palindrome (211443344112).

The spelling of 101221222011 in words is "one hundred one billion, two hundred twenty-one million, two hundred twenty-two thousand, eleven".