106012221 has 32 divisors (see below), whose sum is σ = 178495488. Its totient is φ = 54531840.

The previous prime is 106012211. The next prime is 106012223. The reversal of 106012221 is 122210601.

It is not a de Polignac number, because 106012221 - 2⁵ = 106012189 is a prime.

It is a super-2 number, since 2×106012221² = 22477182002705682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 106012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106012223) 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, 1756 + ... + 14666.

It is an arithmetic number, because the mean of its divisors is an integer number (5577984).

Almost surely, 2^106012221 is an apocalyptic number.

It is an amenable number.

106012221 is a deficient number, since it is larger than the sum of its proper divisors (72483267).

106012221 is a wasteful number, since it uses less digits than its factorization.

106012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12961.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 106012221 is about 10296.2236281075. The cubic root of 106012221 is about 473.2805362764.

Adding to 106012221 its reverse (122210601), we get a palindrome (228222822).

The spelling of 106012221 in words is "one hundred six million, twelve thousand, two hundred twenty-one".