121200211000220 has 48 divisors (see below), whose sum is σ = 280115821587168. Its totient is φ = 43682779176960.

The previous prime is 121200211000201. The next prime is 121200211000237. The reversal of 121200211000220 is 22000112002121.

It is a super-2 number, since 2×121200211000220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121200211000195 and 121200211000204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2437630229 + ... + 2437679948.

It is an arithmetic number, because the mean of its divisors is an integer number (5835746283066).

Almost surely, 2^{121200211000220} is an apocalyptic number.

121200211000220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121200211000220 is an abundant number, since it is smaller than the sum of its proper divisors (158915610586948).

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

121200211000220 is a wasteful number, since it uses less digits than its factorization.

121200211000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4875310310 (or 4875310308 counting only the distinct ones).

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

Adding to 121200211000220 its reverse (22000112002121), we get a palindrome (143200323002341).

The spelling of 121200211000220 in words is "one hundred twenty-one trillion, two hundred billion, two hundred eleven million, two hundred twenty", and thus it is an aban number.