121111101120220 has 24 divisors (see below), whose sum is σ = 254399424630624. Its totient is φ = 48431847633216.

The previous prime is 121111101120197. The next prime is 121111101120239. The reversal of 121111101120220 is 22021101111121.

It is a junction number, because it is equal to n+sod(n) for n = 121111101120194 and 121111101120203.

It is a congruent number.

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, 786972067 + ... + 787125946.

It is an arithmetic number, because the mean of its divisors is an integer number (10599976026276).

Almost surely, 2^{121111101120220} is an apocalyptic number.

121111101120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121111101120220 is an abundant number, since it is smaller than the sum of its proper divisors (133288323510404).

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

121111101120220 is a wasteful number, since it uses less digits than its factorization.

121111101120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574101869 (or 1574101867 counting only the distinct ones).

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

Adding to 121111101120220 its reverse (22021101111121), we get a palindrome (143132202231341).

Subtracting from 121111101120220 its reverse (22021101111121), we obtain a palindrome (99090000009099).

The spelling of 121111101120220 in words is "one hundred twenty-one trillion, one hundred eleven billion, one hundred one million, one hundred twenty thousand, two hundred twenty".