100022221221210 has 48 divisors (see below), whose sum is σ = 264321017405640. Its totient is φ = 26235336712320.

The previous prime is 100022221221199. The next prime is 100022221221277. The reversal of 100022221221210 is 12122122220001.

It is a happy number.

100022221221210 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 222 + 212 + 21 + 210 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 27211173243489 + 72811047977721 = 5216433^2 + 8532939^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9109486425 + ... + 9109497404.

Almost surely, 2^{100022221221210} is an apocalyptic number.

100022221221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100022221221210 is an abundant number, since it is smaller than the sum of its proper divisors (164298796184430).

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

100022221221210 is a wasteful number, since it uses less digits than its factorization.

100022221221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18218983903 (or 18218983900 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 100022221221210 its reverse (12122122220001), we get a palindrome (112144343441211).

The spelling of 100022221221210 in words is "one hundred trillion, twenty-two billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred ten".