202111021101220 has 96 divisors (see below), whose sum is σ = 529198863621120. Its totient is φ = 62991421165440.

The previous prime is 202111021101211. The next prime is 202111021101221. The reversal of 202111021101220 is 22101120111202.

202111021101220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×202111021101220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202111021101194 and 202111021101203.

It is not an unprimeable number, because it can be changed into a prime (202111021101221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18628171 + ... + 27408589.

It is an arithmetic number, because the mean of its divisors is an integer number (5512488162720).

Almost surely, 2^{202111021101220} is an apocalyptic number.

202111021101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202111021101220 is an abundant number, since it is smaller than the sum of its proper divisors (327087842519900).

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

202111021101220 is a wasteful number, since it uses less digits than its factorization.

202111021101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8795393 (or 8795391 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 202111021101220 its reverse (22101120111202), we get a palindrome (224212141212422).

The spelling of 202111021101220 in words is "two hundred two trillion, one hundred eleven billion, twenty-one million, one hundred one thousand, two hundred twenty".