101222121001220 has 24 divisors (see below), whose sum is σ = 212567973543744. Its totient is φ = 40488558983136.

The previous prime is 101222121001217. The next prime is 101222121001237. The reversal of 101222121001220 is 22100121222101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15209504 + ... + 20827223.

It is an arithmetic number, because the mean of its divisors is an integer number (8856998897656).

Almost surely, 2^{101222121001220} is an apocalyptic number.

101222121001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101222121001220 is an abundant number, since it is smaller than the sum of its proper divisors (111345852542524).

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

101222121001220 is a wasteful number, since it uses less digits than its factorization.

101222121001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36177179 (or 36177177 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 101222121001220 its reverse (22100121222101), we get a palindrome (123322242223321).

The spelling of 101222121001220 in words is "one hundred one trillion, two hundred twenty-two billion, one hundred twenty-one million, one thousand, two hundred twenty".