220122101000 has 32 divisors (see below), whose sum is σ = 515085718680. Its totient is φ = 88048840000.

The previous prime is 220122100999. The next prime is 220122101009. The reversal of 220122101000 is 101221022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12680111236 + 207441989764 = 112606^2 + 455458^2 .

It is not an unprimeable number, because it can be changed into a prime (220122101009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110060051 + ... + 110062050.

Almost surely, 2^220122101000 is an apocalyptic number.

220122101000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220122101000 is an abundant number, since it is smaller than the sum of its proper divisors (294963617680).

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

220122101000 is a wasteful number, since it uses less digits than its factorization.

220122101000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220122122 (or 220122108 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 220122101000 its reverse (101221022), we get a palindrome (220223322022).

The spelling of 220122101000 in words is "two hundred twenty billion, one hundred twenty-two million, one hundred one thousand".