202101230121220 has 24 divisors (see below), whose sum is σ = 431370166589208. Its totient is φ = 79515238080000.

The previous prime is 202101230121211. The next prime is 202101230121251. The reversal of 202101230121220 is 22121032101202.

202101230121220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8253083261124 + 193848146860096 = 2872818^2 + 13922936^2 .

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, 82828371781 + ... + 82828374220.

It is an arithmetic number, because the mean of its divisors is an integer number (17973756941217).

Almost surely, 2^{202101230121220} is an apocalyptic number.

202101230121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202101230121220 is an abundant number, since it is smaller than the sum of its proper divisors (229268936467988).

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

202101230121220 is a wasteful number, since it uses less digits than its factorization.

202101230121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165656746071 (or 165656746069 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 202101230121220 its reverse (22121032101202), we get a palindrome (224222262222422).

The spelling of 202101230121220 in words is "two hundred two trillion, one hundred one billion, two hundred thirty million, one hundred twenty-one thousand, two hundred twenty".