121020101120220 has 1152 divisors, whose sum is σ = 393059481292800. Its totient is φ = 27667596902400.

The previous prime is 121020101120207. The next prime is 121020101120239. The reversal of 121020101120220 is 22021101020121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121020101120220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 446568638685 + ... + 446568638955.

It is an arithmetic number, because the mean of its divisors is an integer number (341197466400).

Almost surely, 2^{121020101120220} is an apocalyptic number.

121020101120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121020101120220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196529740646400).

121020101120220 is an abundant number, since it is smaller than the sum of its proper divisors (272039380172580).

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

121020101120220 is a wasteful number, since it uses less digits than its factorization.

121020101120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121020101120220 its reverse (22021101020121), we get a palindrome (143041202140341).

The spelling of 121020101120220 in words is "one hundred twenty-one trillion, twenty billion, one hundred one million, one hundred twenty thousand, two hundred twenty".