220012156 has 72 divisors (see below), whose sum is σ = 488886720. Its totient is φ = 85857408.

The previous prime is 220012103. The next prime is 220012157. The reversal of 220012156 is 651210022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220012157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200746 + ... + 201838.

Almost surely, 2^220012156 is an apocalyptic number.

220012156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220012156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244443360).

220012156 is an abundant number, since it is smaller than the sum of its proper divisors (268874564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220012156 is a wasteful number, since it uses less digits than its factorization.

220012156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1194 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 220012156 is about 14832.8067472074. The cubic root of 220012156 is about 603.6921921828.

Adding to 220012156 its reverse (651210022), we get a palindrome (871222178).

The spelling of 220012156 in words is "two hundred twenty million, twelve thousand, one hundred fifty-six".