220122221121012 has 48 divisors (see below), whose sum is σ = 586994035299840. Its totient is φ = 62891908287072.

The previous prime is 220122221120957. The next prime is 220122221121013. The reversal of 220122221121012 is 210121122221022.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 220122221121012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220122221121013) 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, 33566023 + ... + 39584369.

It is an arithmetic number, because the mean of its divisors is an integer number (12229042402080).

Almost surely, 2^{220122221121012} is an apocalyptic number.

It is an amenable number.

220122221121012 is an abundant number, since it is smaller than the sum of its proper divisors (366871814178828).

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

220122221121012 is a wasteful number, since it uses less digits than its factorization.

220122221121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6453780 (or 6453778 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 220122221121012 its reverse (210121122221022), we get a palindrome (430243343342034).

The spelling of 220122221121012 in words is "two hundred twenty trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-one thousand, twelve".