121101213311220 has 48 divisors (see below), whose sum is σ = 339087738403008. Its totient is φ = 32293243441920.

The previous prime is 121101213311161. The next prime is 121101213311311. The reversal of 121101213311220 is 22113312101121.

It is a super-3 number, since 3×121101213311220³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

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, 8180041 + ... + 17581680.

It is an arithmetic number, because the mean of its divisors is an integer number (7064327883396).

Almost surely, 2^{121101213311220} is an apocalyptic number.

121101213311220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121101213311220 is an abundant number, since it is smaller than the sum of its proper divisors (217986525091788).

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

121101213311220 is a wasteful number, since it uses less digits than its factorization.

121101213311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25840080 (or 25840078 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 121101213311220 its reverse (22113312101121), we get a palindrome (143214525412341).

The spelling of 121101213311220 in words is "one hundred twenty-one trillion, one hundred one billion, two hundred thirteen million, three hundred eleven thousand, two hundred twenty".