2006122156 has 12 divisors (see below), whose sum is σ = 3520495440. Its totient is φ = 1000266320.

The previous prime is 2006122147. The next prime is 2006122159. The reversal of 2006122156 is 6512216002.

It is a super-2 number, since 2×2006122156² = 8049052209588176672, 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 2006122156.

It is not an unprimeable number, because it can be changed into a prime (2006122159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697075 + ... + 699946.

It is an arithmetic number, because the mean of its divisors is an integer number (293374620).

Almost surely, 2^2006122156 is an apocalyptic number.

It is an amenable number.

2006122156 is a deficient number, since it is larger than the sum of its proper divisors (1514373284).

2006122156 is a wasteful number, since it uses less digits than its factorization.

2006122156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397384 (or 1397382 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2006122156 is about 44789.7550339361. The cubic root of 2006122156 is about 1261.2053125780.

Adding to 2006122156 its reverse (6512216002), we get a palindrome (8518338158).

The spelling of 2006122156 in words is "two billion, six million, one hundred twenty-two thousand, one hundred fifty-six".