121021223310 has 128 divisors (see below), whose sum is σ = 348787797120. Its totient is φ = 29683584000.

The previous prime is 121021223303. The next prime is 121021223327. The reversal of 121021223310 is 13322120121.

121021223310 is a `hidden beast` number, since 1 + 210 + 2 + 122 + 331 + 0 = 666.

It is a super-2 number, since 2×121021223310² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 63 ways as a sum of consecutive naturals, for example, 924960 + ... + 1047660.

It is an arithmetic number, because the mean of its divisors is an integer number (2724904665).

Almost surely, 2^121021223310 is an apocalyptic number.

121021223310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121021223310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174393898560).

121021223310 is an abundant number, since it is smaller than the sum of its proper divisors (227766573810).

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

121021223310 is a wasteful number, since it uses less digits than its factorization.

121021223310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123011 (or 123005 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121021223310 its reverse (13322120121), we get a palindrome (134343343431).

The spelling of 121021223310 in words is "one hundred twenty-one billion, twenty-one million, two hundred twenty-three thousand, three hundred ten".