2012221101 has 16 divisors (see below), whose sum is σ = 2928752640. Its totient is φ = 1218742320.

The previous prime is 2012221097. The next prime is 2012221111. The reversal of 2012221101 is 1011222102.

It is not a de Polignac number, because 2012221101 - 2² = 2012221097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012221111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34596 + ... + 72258.

It is an arithmetic number, because the mean of its divisors is an integer number (183047040).

Almost surely, 2^2012221101 is an apocalyptic number.

It is an amenable number.

2012221101 is a deficient number, since it is larger than the sum of its proper divisors (916531539).

2012221101 is a wasteful number, since it uses less digits than its factorization.

2012221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39296.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2012221101 is about 44857.7875178881. The cubic root of 2012221101 is about 1262.4821108598.

Adding to 2012221101 its reverse (1011222102), we get a palindrome (3023443203).

The spelling of 2012221101 in words is "two billion, twelve million, two hundred twenty-one thousand, one hundred one".