20102220121100 has 72 divisors (see below), whose sum is σ = 47051793055008. Its totient is φ = 7410595046400.

The previous prime is 20102220121097. The next prime is 20102220121117. The reversal of 20102220121100 is 112102220102.

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, 11432669 + ... + 13073268.

It is an arithmetic number, because the mean of its divisors is an integer number (653497125764).

Almost surely, 2^{20102220121100} is an apocalyptic number.

20102220121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102220121100 is an abundant number, since it is smaller than the sum of its proper divisors (26949572933908).

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

20102220121100 is a wasteful number, since it uses less digits than its factorization.

20102220121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24506595 (or 24506588 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20102220121100 its reverse (112102220102), we get a palindrome (20214322341202).

The spelling of 20102220121100 in words is "twenty trillion, one hundred two billion, two hundred twenty million, one hundred twenty-one thousand, one hundred".