12121202101220 has 48 divisors (see below), whose sum is σ = 25527157907328. Its totient is φ = 4834658050560.

The previous prime is 12121202101189. The next prime is 12121202101241. The reversal of 12121202101220 is 2210120212121.

12121202101220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 15616115 + ... + 16373925.

It is an arithmetic number, because the mean of its divisors is an integer number (531815789736).

Almost surely, 2^{12121202101220} is an apocalyptic number.

12121202101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121202101220 is an abundant number, since it is smaller than the sum of its proper divisors (13405955806108).

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

12121202101220 is a wasteful number, since it uses less digits than its factorization.

12121202101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760100 (or 760098 counting only the distinct ones).

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

Adding to 12121202101220 its reverse (2210120212121), we get a palindrome (14331322313341).

The spelling of 12121202101220 in words is "twelve trillion, one hundred twenty-one billion, two hundred two million, one hundred one thousand, two hundred twenty".