100212021222220 has 48 divisors (see below), whose sum is σ = 210982078667808. Its totient is φ = 39982560837120.

The previous prime is 100212021222199. The next prime is 100212021222239. The reversal of 100212021222220 is 22222120212001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271133064 + ... + 271502416.

It is an arithmetic number, because the mean of its divisors is an integer number (4395459972246).

Almost surely, 2^{100212021222220} is an apocalyptic number.

100212021222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100212021222220 is an abundant number, since it is smaller than the sum of its proper divisors (110770057445588).

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

100212021222220 is a wasteful number, since it uses less digits than its factorization.

100212021222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403930 (or 403928 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 100212021222220 its reverse (22222120212001), we get a palindrome (122434141434221).

The spelling of 100212021222220 in words is "one hundred trillion, two hundred twelve billion, twenty-one million, two hundred twenty-two thousand, two hundred twenty".