20212102111220 has 24 divisors (see below), whose sum is σ = 42446808873504. Its totient is φ = 8084575236896.

The previous prime is 20212102111217. The next prime is 20212102111231. The reversal of 20212102111220 is 2211120121202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15975902 + ... + 17194581.

It is an arithmetic number, because the mean of its divisors is an integer number (1768617036396).

Almost surely, 2^{20212102111220} is an apocalyptic number.

20212102111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212102111220 is an abundant number, since it is smaller than the sum of its proper divisors (22234706762284).

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

20212102111220 is a wasteful number, since it uses less digits than its factorization.

20212102111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33200959 (or 33200957 counting only the distinct ones).

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

Adding to 20212102111220 its reverse (2211120121202), we get a palindrome (22423222232422).

The spelling of 20212102111220 in words is "twenty trillion, two hundred twelve billion, one hundred two million, one hundred eleven thousand, two hundred twenty".