121020221310 has 32 divisors (see below), whose sum is σ = 290488678272. Its totient is φ = 32267598240.

The previous prime is 121020221281. The next prime is 121020221351. The reversal of 121020221310 is 13122020121.

It is a super-3 number, since 3×121020221310³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 121020221310.

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, 55204 + ... + 495063.

It is an arithmetic number, because the mean of its divisors is an integer number (9077771196).

Almost surely, 2^121020221310 is an apocalyptic number.

121020221310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121020221310 is an abundant number, since it is smaller than the sum of its proper divisors (169468456962).

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

121020221310 is a wasteful number, since it uses less digits than its factorization.

121020221310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557608.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121020221310 its reverse (13122020121), we get a palindrome (134142241431).

The spelling of 121020221310 in words is "one hundred twenty-one billion, twenty million, two hundred twenty-one thousand, three hundred ten".